{"id":871,"date":"2026-05-25T03:49:57","date_gmt":"2026-05-25T03:49:57","guid":{"rendered":"https:\/\/wuhantopmiraclepeptides.com\/?post_type=product&#038;p=871"},"modified":"2026-06-24T10:24:55","modified_gmt":"2026-06-24T10:24:55","slug":"dsip","status":"publish","type":"product","link":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/product\/dsip\/","title":{"rendered":"DSIP"},"content":{"rendered":"<h1><span class=\"\">DSIP Research Peptide: An Endogenous Nonapeptide for Sleep &amp; Neuroendocrine Studies<\/span><\/h1>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">If your research investigates the neurobiology of sleep, circadian rhythms, or the complex interplay between neuropeptides and pain modulation,\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0(Delta\u2011Sleep\u2011Inducing Peptide) offers a precisely defined and historically significant synthetic tool. DSIP is an endogenous nonapeptide that was first isolated from cerebral venous blood of rabbits during electrically induced sleep in the mid\u20111970s<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\"> As one of the first sleep\u2011promoting factors to be purified and characterised, it has since been shown to induce delta (slow\u2011wave) sleep in mammals, while also exerting a remarkable range of extra\u2011sleep effects\u2014including modulation of neurotransmitter levels, circadian rhythms, pain perception, and hormonal activity<\/span><span class=\"\">. This makes\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0a uniquely valuable tool for laboratories investigating sleep physiology, neuroendocrinology, pain regulation, and the broader functions of neuropeptide signalling.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">At\u00a0<\/span><strong><span class=\"\">Wuhan Top Miracle Peptides<\/span><\/strong><span class=\"\">, we supply high\u2011purity\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0to research institutions and wholesale buyers across the\u00a0<\/span><strong><span class=\"\">United Kingdom, France, Germany, Spain, Sweden, Italy, and the USA<\/span><\/strong><span class=\"\">. Every batch is lyophilised, HPLC\u2011verified to \u226598% purity, and accompanied by a Certificate of Analysis (COA), ensuring your investigations into sleep regulation, neuroendocrine signalling, and pain modulation begin with uncompromising quality.<\/span><\/p>\n<h2><span class=\"\">What Is DSIP and How Does It Work?<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">To fully appreciate the research potential of\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">, it is essential to understand its biochemical structure and the diverse mechanisms by which it exerts its pleiotropic effects.<\/span><\/p>\n<h3><span class=\"\">The Endogenous Nonapeptide<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP is a naturally occurring nonapeptide\u2014a chain of nine amino acids\u2014with the sequence\u00a0<\/span><strong><span class=\"\">Trp\u2011Ala\u2011Gly\u2011Gly\u2011Asp\u2011Ala\u2011Ser\u2011Gly\u2011Glu (WAGGDASGE)<\/span><\/strong><span class=\"\">. Its molecular formula is\u00a0<\/span><strong><span class=\"\">C\u2083\u2085H\u2084\u2088N\u2081\u2080O\u2081\u2085<\/span><\/strong><span class=\"\">, and its molecular weight is approximately\u00a0<\/span><strong><span class=\"\">848.81 Da<\/span><\/strong><span class=\"\">. It has a CAS number of\u00a0<\/span><strong><span class=\"\">62568\u201157\u20114<\/span><\/strong><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The peptide is found in neurons, peripheral organs, and plasma<\/span><span class=\"\">. It was discovered during the mid\u20111970s by a group of Swiss scientists, and its amino acid sequence was subsequently characterised<\/span><span class=\"\">.<\/span><\/p>\n<h3><span class=\"\">Mechanism of Action: Multifunctional Neuropeptide Signalling<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The biological activity of\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0is mediated through several intersecting pathways. Importantly, DSIP does not appear to act through a single, dedicated receptor but rather exerts its effects through multiple mechanisms.<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Delta\u2011Sleep Induction:<\/span><\/strong><span class=\"\">\u00a0DSIP induces mainly delta\u2011sleep (slow\u2011wave sleep) in rabbits, rats, mice, and humans<\/span><span class=\"\">. A U\u2011shaped activity curve has been determined for both dose and time of infusion<\/span><span class=\"\">. In addition to sleep, the peptide has been observed to affect electrophysiological activity, neurotransmitter levels, circadian and locomotor patterns, hormonal levels, psychological performance, and the activity of neuropharmacological drugs including their withdrawal<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Modulation of Neurotransmitter Systems:<\/span><\/strong><span class=\"\">\u00a0DSIP is reported to influence the activity of several key neurotransmitter systems. It has been shown to affect the enzymatic activity of serotonin\u2011N\u2011acetyltransferase, a pineal enzyme that exhibits strong circadian rhythmicity<\/span><span class=\"\">. Research also suggests its effects may be mediated through interactions with GABAergic and NMDA receptor activity, which are critical for neuronal excitability and relaxation<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Dopaminergic Mechanisms:<\/span><\/strong><span class=\"\">\u00a0DSIP inhibits somatostatin (SRIF) release in a dose\u2011dependent manner via a dopaminergic mechanism, as demonstrated in rat hypothalamic tissue<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Indirect Opioid\u2011Mediated Antinociception:<\/span><\/strong><span class=\"\">\u00a0DSIP produces a significant dose\u2011dependent antinociceptive (pain\u2011relieving) effect when administered centrally<\/span><span class=\"\">. Importantly, DSIP does not bind directly to any subtype of opioid receptors. Instead, it stimulates the release of immunoreactive Met\u2011enkephalin, an endogenous opioid peptide, in a calcium\u2011dependent manner<\/span><span class=\"\">. This indirect mechanism explains why the antinociceptive effect of DSIP is blocked by the opioid antagonist naloxone<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Effects on Circadian Rhythm:<\/span><\/strong><span class=\"\">\u00a0DSIP acts upon the circadian rhythmicity of locomotor activity and transmitter concentrations in the brain<\/span><span class=\"\">. Studies have shown that DSIP and its analogue can influence and even generate a circadian rhythm as measured by locomotor activity<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Research Note: Blood\u2011Brain Barrier Penetration and Half\u2011Life<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP can penetrate the blood\u2011brain barrier<\/span><span class=\"\">. The peptide has been shown to cross both the blood\u2011brain barrier and the blood\u2011cerebrospinal fluid barrier<\/span><span class=\"\">. The half\u2011life for proteolytic split\u2011off of tryptophan by brain slices and homogenates is approximately\u00a0<\/span><strong><span class=\"\">15 minutes<\/span><\/strong><span class=\"\">.<\/span><\/p>\n<h2><span class=\"\">Key Research Applications for DSIP<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0is a versatile tool with applications spanning several domains of biomedical research.<\/span><\/p>\n<h3><span class=\"\">1. Sleep Research &amp; Chronobiology<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">As one of the most well\u2011studied endogenous sleep\u2011promoting factors, DSIP is an essential tool for sleep research. Research applications include:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Mechanisms of Sleep Onset:<\/span><\/strong><span class=\"\">\u00a0Investigating the role of DSIP in sleep initiation and maintenance<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Slow\u2011Wave Sleep:<\/span><\/strong><span class=\"\">\u00a0Studying the induction of delta sleep and its regulation<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Circadian Rhythms:<\/span><\/strong><span class=\"\">\u00a0Exploring how DSIP influences circadian and locomotor patterns<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Insomnia Models:<\/span><\/strong><span class=\"\">\u00a0Investigating DSIP&#8217;s sleep\u2011promoting effects and neurotransmitter modulation in insomnia models<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Sleep Architecture:<\/span><\/strong><span class=\"\">\u00a0Studying DSIP&#8217;s effects on sleep structure and quality<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">2. Pain &amp; Analgesia Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP&#8217;s unique indirect opioid\u2011mediated antinociceptive effect makes it a valuable tool for pain research. Research applications include:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Central Pain Mechanisms:<\/span><\/strong><span class=\"\">\u00a0Investigating the role of DSIP in pain regulation at the supraspinal level<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Endogenous Opioid Pathways:<\/span><\/strong><span class=\"\">\u00a0Studying how DSIP stimulates Met\u2011enkephalin release and activates descending pain inhibitory systems<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Pain Threshold Studies:<\/span><\/strong><span class=\"\">\u00a0Exploring DSIP&#8217;s effects on pain thresholds in various experimental models<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Morphine Tolerance:<\/span><\/strong><span class=\"\">\u00a0Investigating the lack of cross\u2011tolerance between DSIP and morphine<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">3. Neuroendocrine Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP exerts significant effects on the neuroendocrine system. Research applications include:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Somatostatin Regulation:<\/span><\/strong><span class=\"\">\u00a0Studying DSIP&#8217;s dopaminergic inhibition of somatostatin release<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Hormonal Modulation:<\/span><\/strong><span class=\"\">\u00a0Investigating DSIP&#8217;s effects on hormonal levels and the neuroendocrine system<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Stress Response:<\/span><\/strong><span class=\"\">\u00a0Exploring DSIP&#8217;s role in stress regulation and neuroendocrine adaptation<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">4. Neurodegenerative &amp; Neurological Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP has been implicated in various neurological conditions. Research applications include:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Neuroprotection:<\/span><\/strong><span class=\"\">\u00a0Investigating DSIP&#8217;s role in motor function recovery following focal stroke<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Neuropathological Syndromes:<\/span><\/strong><span class=\"\">\u00a0Studying DSIP&#8217;s involvement in epileptic, parkinsonian, and withdrawal syndromes<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Cognitive Function:<\/span><\/strong><span class=\"\">\u00a0Exploring DSIP&#8217;s effects on cognitive and psychological performance<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">5. Drug Withdrawal &amp; Addiction Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">DSIP has been shown to affect the activity of neuropharmacological drugs including their withdrawal<\/span><span class=\"\">. Research applications include:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Withdrawal Syndromes:<\/span><\/strong><span class=\"\">\u00a0Investigating DSIP&#8217;s role in withdrawal syndromes<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Addiction Models:<\/span><\/strong><span class=\"\">\u00a0Studying DSIP&#8217;s potential to modulate drug\u2011seeking behaviour.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"\">Chemical &amp; Physical Specifications<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Accurate characterisation of\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0is essential for reproducible experimental design.<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Parameter<\/span><\/th>\n<th><span class=\"\">Specification<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong><span class=\"\">Common Names<\/span><\/strong><\/td>\n<td><span class=\"\">DSIP, Delta\u2011Sleep\u2011Inducing Peptide, Emideltide<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Amino Acid Sequence (One\u2011Letter)<\/span><\/strong><\/td>\n<td><span class=\"\">WAGGDASGE<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Amino Acid Sequence (Three\u2011Letter)<\/span><\/strong><\/td>\n<td><span class=\"\">H\u2011Trp\u2011Ala\u2011Gly\u2011Gly\u2011Asp\u2011Ala\u2011Ser\u2011Gly\u2011Glu\u2011OH<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Molecular Formula<\/span><\/strong><\/td>\n<td><span class=\"\">C\u2083\u2085H\u2084\u2088N\u2081\u2080O\u2081\u2085<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Molecular Weight<\/span><\/strong><\/td>\n<td><span class=\"\">~848.81 Da<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">CAS Number<\/span><\/strong><\/td>\n<td><span class=\"\">62568\u201157\u20114<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">PubChem CID<\/span><\/strong><\/td>\n<td><span class=\"\">68816<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Purity<\/span><\/strong><\/td>\n<td><strong><span class=\"\">\u226598%<\/span><\/strong><span class=\"\">\u00a0(HPLC verified)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Appearance<\/span><\/strong><\/td>\n<td><span class=\"\">White to off\u2011white lyophilised powder<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Solubility<\/span><\/strong><\/td>\n<td><span class=\"\">Soluble in sterile water and sterile PBS (pH 5\u20117)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Storage (Lyophilised)<\/span><\/strong><\/td>\n<td><span class=\"\">\u201320\u00b0C, sealed, protected from light; stable for up to 2 years<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Storage (Reconstituted)<\/span><\/strong><\/td>\n<td><span class=\"\">2\u20118\u00b0C for short\u2011term use; single\u2011use aliquots at \u201320\u00b0C for long\u2011term storage<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"\">Reconstitution &amp; Handling Protocol for DSIP<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Proper reconstitution of\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0is critical for maintaining its structural integrity and biological activity. The peptide has a relatively short half\u2011life in brain tissue (approximately 15 minutes for tryptophan cleavage), so careful handling is essential<\/span><span class=\"\">.<\/span><\/p>\n<h3><span class=\"\">Step 1 \u2013 Preparation<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Bring the sealed DSIP vial and your chosen diluent (sterile bacteriostatic water or sterile PBS, pH\u202f5\u20117) to room temperature.\u00a0<\/span><em><span class=\"\">Condensation can degrade the lyophilised powder.<\/span><\/em><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Clean your work surface with 70% ethanol and lay out sterile syringes, alcohol wipes and a clean work mat.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 2 \u2013 Vial Sanitisation<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Wipe the rubber stopper of the DSIP vial with a fresh 70% ethanol wipe. Allow the alcohol to evaporate completely before piercing.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 3 \u2013 Reconstitution<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Draw your desired volume of diluent into a sterile syringe. A common starting concentration for research applications is\u00a0<\/span><strong><span class=\"\">1\u20112\u202fmg per 1\u202fmL of diluent<\/span><\/strong><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Insert the needle and slowly inject the diluent\u00a0<\/span><strong><span class=\"\">against the inner glass wall<\/span><\/strong><span class=\"\">. Do not spray directly onto the lyophilised powder.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Gently swirl the vial until the solution is clear and fully dissolved.\u00a0<\/span><strong><span class=\"\">Do not shake vigorously<\/span><\/strong><span class=\"\">, as shaking can cause denaturation.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 4 \u2013 Aliquoting &amp; Storage<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Immediately after dissolution, aliquot the reconstituted DSIP into single\u2011use sterile vials.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Store aliquots at \u201320\u00b0C.\u00a0<\/span><strong><span class=\"\">Avoid repeated freeze\u2011thaw cycles<\/span><\/strong><span class=\"\">, as peptides are susceptible to degradation.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Once thawed, store at 2\u20118\u00b0C and use within a short period.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Concentration Reference Table<\/span><\/h3>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Vial Mass<\/span><\/th>\n<th><span class=\"\">Diluent Volume<\/span><\/th>\n<th><span class=\"\">Final Concentration<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">1\u202fmg<\/span><\/td>\n<td><span class=\"\">1.0\u202fmL<\/span><\/td>\n<td><span class=\"\">1\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">2\u202fmg<\/span><\/td>\n<td><span class=\"\">1.0\u202fmL<\/span><\/td>\n<td><span class=\"\">2\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">5\u202fmg<\/span><\/td>\n<td><span class=\"\">2.5\u202fmL<\/span><\/td>\n<td><span class=\"\">2\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><em><span class=\"\">Adjust diluent volume based on your experimental requirements. For cell culture applications, typical working concentrations may range from\u00a0<\/span><strong><span class=\"\">0.1\u201110\u202f\u00b5M<\/span><\/strong><span class=\"\">.<\/span><\/em><\/p>\n<h2><span class=\"\">Storage &amp; Stability Guidelines<\/span><\/h2>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Storage Condition<\/span><\/th>\n<th><span class=\"\">Shelf Life<\/span><\/th>\n<th><span class=\"\">Notes<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Lyophilised at \u201320\u00b0C, unopened<\/span><\/td>\n<td><span class=\"\">2 years<\/span><\/td>\n<td><span class=\"\">Use desiccant, protect from light<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Lyophilised at 2\u20118\u00b0C, unopened<\/span><\/td>\n<td><span class=\"\">6\u201112 months<\/span><\/td>\n<td><span class=\"\">\u201320\u00b0C storage is strongly preferred for long\u2011term stability<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reconstituted at 2\u20118\u00b0C<\/span><\/td>\n<td><span class=\"\">Short\u2011term use<\/span><\/td>\n<td><span class=\"\">Use within days to weeks<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reconstituted aliquots at \u201320\u00b0C<\/span><\/td>\n<td><span class=\"\">Up to 3 months<\/span><\/td>\n<td><span class=\"\">Single freeze only; discard after thawing<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"\">Why Choose Wuhan Top Miracle Peptides for DSIP?<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">As an authentic licensed peptide supplier based in the\u00a0<\/span><strong><span class=\"\">United Kingdom<\/span><\/strong><span class=\"\">, we supply\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0and a wide range of research\u2011grade compounds under rigorous quality assurance protocols, fully aligned with Google&#8217;s\u00a0<\/span><strong><span class=\"\">E\u2011E\u2011A\u2011T<\/span><\/strong><span class=\"\">\u00a0standards (Experience, Expertise, Authoritativeness, Trustworthiness).<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Verified Purity:<\/span><\/strong><span class=\"\">\u00a0Independent HPLC analysis with purity guaranteed\u00a0<\/span><strong><span class=\"\">\u226598%<\/span><\/strong><span class=\"\">\u00a0for every batch.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">GMP\u2011Compliant Manufacturing:<\/span><\/strong><span class=\"\">\u00a0All peptides are synthesised under strict quality control conditions.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Full Traceability:<\/span><\/strong><span class=\"\">\u00a0Batch\u2011specific Certificates of Analysis (COA) are available for every order.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Wholesale Supply:<\/span><\/strong><span class=\"\">\u00a0We serve research institutions, laboratories, and wholesale buyers across the UK, EU, and USA with flexible volume pricing and reliable logistics.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">UK\u2011Based Regulatory Compliance:<\/span><\/strong><span class=\"\">\u00a0All products are supplied strictly as research\u2011grade chemicals for laboratory use only (RUO).<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Researchers across the United Kingdom\u2014including those at leading institutions in London, Cambridge, Oxford, Manchester, and Edinburgh\u2014trust us for fast domestic delivery, transparent documentation and professional technical support.<\/span><\/p>\n<h2><span class=\"\">FAQ: DSIP Research Peptide<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is DSIP research peptide?<\/span><\/strong><br \/>\n<span class=\"\">DSIP (Delta\u2011Sleep\u2011Inducing Peptide) is an endogenous nonapeptide (Trp\u2011Ala\u2011Gly\u2011Gly\u2011Asp\u2011Ala\u2011Ser\u2011Gly\u2011Glu) that was first isolated from cerebral venous blood during electrically induced sleep. It is one of the first sleep\u2011promoting factors to be purified and characterised<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">\u00a0What is the sequence and molecular weight of DSIP?<\/span><\/strong><br \/>\n<span class=\"\">The sequence is\u00a0<\/span><strong><span class=\"\">Trp\u2011Ala\u2011Gly\u2011Gly\u2011Asp\u2011Ala\u2011Ser\u2011Gly\u2011Glu (WAGGDASGE)<\/span><\/strong><span class=\"\">. Its molecular weight is approximately\u00a0<\/span><strong><span class=\"\">848.81 Da<\/span><\/strong><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What are the primary research applications for DSIP?<\/span><\/strong><br \/>\n<span class=\"\">DSIP is used in sleep research and chronobiology (sleep onset, slow\u2011wave sleep, circadian rhythms), pain and analgesia research (central pain mechanisms, endogenous opioid pathways), neuroendocrine research (somatostatin regulation), neurodegenerative and neurological research, and drug withdrawal and addiction research.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is the mechanism of action of DSIP?<\/span><\/strong><br \/>\n<span class=\"\">DSIP induces delta\u2011sleep and exerts extra\u2011sleep effects including modulation of neurotransmitter systems, dopaminergic inhibition of somatostatin release, and indirect opioid\u2011mediated antinociception via stimulation of Met\u2011enkephalin release<\/span><span class=\"\">. It does not bind directly to opioid receptors<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Can DSIP cross the blood\u2011brain barrier?<\/span><\/strong><br \/>\n<span class=\"\">Yes. DSIP can penetrate the blood\u2011brain barrier and the blood\u2011cerebrospinal fluid barrier<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What purity does your DSIP research peptide meet?<\/span><\/strong><br \/>\n<span class=\"\">Our DSIP is tested to\u00a0<\/span><strong><span class=\"\">\u226598% purity<\/span><\/strong><span class=\"\">\u00a0by HPLC. A Certificate of Analysis (COA) is supplied with every order.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How should I reconstitute DSIP?<\/span><\/strong><br \/>\n<span class=\"\">Reconstitute with sterile bacteriostatic water or sterile PBS (pH\u202f5\u20117). Allow the vial to reach room temperature, then slowly inject the diluent against the inner glass wall and swirl gently. Do not shake.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How should I store reconstituted DSIP?<\/span><\/strong><br \/>\n<span class=\"\">Reconstituted DSIP should be stored at 2\u20118\u00b0C for short\u2011term use. For longer storage, aliquot immediately into single\u2011use vials and store at \u201320\u00b0C for up to 3 months. Avoid repeated freeze\u2011thaw cycles.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Is DSIP research peptide legal to purchase in the UK?<\/span><\/strong><br \/>\n<span class=\"\">Yes. DSIP is a laboratory reagent sold for\u00a0<\/span><strong><span class=\"\">research use only (RUO)<\/span><\/strong><span class=\"\">. It is fully legal to purchase, possess, and use in the United Kingdom for legitimate in\u2011vitro or in\u2011vivo scientific research, provided it is not marketed with therapeutic claims.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Does Wuhan Top Miracle Peptides ship internationally?<\/span><\/strong><br \/>\n<span class=\"\">Yes. We ship across the EU (France, Germany, Spain, Sweden, Italy) and to the USA from our UK warehouse. Wholesale pricing is available for bulk orders.<\/span><\/p>\n<h2>Wholesale DSIP Supply Across the UK and Europe<\/h2>\n<p class=\"isSelectedEnd\">Wuhan Top Miracle Peptides supports wholesale peptide buyers in the United Kingdom and international markets.<\/p>\n<h3>We Support Enquiries From:<\/h3>\n<ul data-spread=\"false\">\n<li>United Kingdom<\/li>\n<li>France<\/li>\n<li>Germany<\/li>\n<li>Spain<\/li>\n<li>Sweden<\/li>\n<li>Italy<\/li>\n<li>USA<\/li>\n<li>Wider Europe<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">For larger DSIP enquiries, contact our team before ordering. This helps confirm stock, documentation, shipping options, product identity, and buyer verification requirements.<\/p>\n<h2>Where to Source DSIP Peptide in the UK<\/h2>\n<p class=\"isSelectedEnd\">If you are searching for <strong>where to source DSIP peptide in the UK<\/strong>, Wuhan Top Miracle Peptides provides a simple professional enquiry process.<\/p>\n<p><a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/bulk-orders\/\"><strong>Bulk Peptides Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/shipping-returns\/\"><strong>Shipping &amp; Returns Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/contact-us\/\"><strong>Contact Us Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/shop-3\/\"><strong>Shop Page<\/strong><\/a><br \/>\n<strong>Quality \/ Compliance Page<\/strong><br \/>\n<strong>Scientific reference for DSIP<\/strong><br \/>\n<strong>Scientific or peer-reviewed reference source<\/strong><br \/>\n<strong>GOV.UK \/ MHRA<\/strong><br \/>\n<strong>Google Search Central<\/strong><br \/>\n<strong>ASA \/ CAP Code Section 12<\/strong><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">From its discovery as one of the first characterised sleep\u2011promoting factors to its well\u2011documented role in inducing delta\u2011sleep, modulating neurotransmitter systems, and exerting indirect opioid\u2011mediated antinociception,\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0provides a precisely defined and historically significant platform for advanced neurobiological research. <\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Its ability to influence circadian rhythms, hormonal levels, and neuropharmacological drug activity\u2014supported by decades of peer\u2011reviewed research published in\u00a0<\/span><em><span class=\"\">PubMed<\/span><\/em><span class=\"\">,\u00a0<\/span><em><span class=\"\">PubChem<\/span><\/em><span class=\"\">, and other authoritative sources\u2014makes it a valuable addition to any laboratory investigating sleep physiology, neuroendocrine signalling, or pain regulation. By choosing high\u2011purity, lab\u2011verified\u00a0<\/span><strong><span class=\"\">DSIP research peptide<\/span><\/strong><span class=\"\">\u00a0from\u00a0<\/span><strong><span class=\"\">Wuhan Top Miracle Peptides<\/span><\/strong><span class=\"\">, you ensure that your research is built on a foundation of quality, reproducibility, and scientific integrity.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Ready to advance your research with DSIP?<\/span><\/strong><span class=\"\">\u00a0Browse our product catalogue, request a wholesale quote, or contact our support team today to discuss your laboratory&#8217;s specific needs.\u00a0<\/span><strong><span class=\"\">Place your order now<\/span><\/strong><span class=\"\">\u00a0and receive GMP\u2011grade DSIP delivered directly to your facility in the UK, EU, or USA.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DSIP Research Peptide: An Endogenous Nonapeptide for Sleep &amp; Neuroendocrine Studies If your research investigates the neurobiology of sleep, circadian rhythms, or the complex interplay between neuropeptides and pain modulation,\u00a0DSIP research peptide\u00a0(Delta\u2011Sleep\u2011Inducing Peptide) offers a precisely defined and historically significant synthetic tool. DSIP is an endogenous nonapeptide that was first isolated from cerebral venous blood [&#8230;]\n","protected":false},"featured_media":145,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[18],"product_tag":[1089,1102,268,1107,1110,1103,1099,1096,1095,1091,1094,1104,1090,1093,1097,1098,1101,1106,1108,1092,1109,1100,1105,395,857,232,212,637,266,215,1111,269,218,239],"class_list":["post-871","product","type-product","status-publish","has-post-thumbnail","product_cat-peptides","product_tag-buy-dsip-online-uk","product_tag-cheap-dsip-uk","product_tag-coa-peptide-supplier-uk","product_tag-delta-sleep-inducing-peptide-uk","product_tag-dsip-batch-documentation","product_tag-dsip-before-and-after","product_tag-dsip-dosage","product_tag-dsip-for-addiction-support","product_tag-dsip-for-anxiety","product_tag-dsip-for-insomnia","product_tag-dsip-for-pain-relief","product_tag-dsip-for-personal-use","product_tag-dsip-for-sleep","product_tag-dsip-for-stress","product_tag-dsip-for-withdrawal","product_tag-dsip-injection-guide","product_tag-dsip-no-prescription","product_tag-dsip-peptide","product_tag-dsip-research-peptide","product_tag-dsip-sleep-peptide-results","product_tag-dsip-supplier-uk","product_tag-dsip-treatment-uk","product_tag-dsip-uk","product_tag-europe-peptide-supplier","product_tag-peptide-documentation-uk","product_tag-peptide-purity-uk","product_tag-peptides-for-sale-uk","product_tag-professional-peptide-enquiry-uk","product_tag-professional-peptide-supplier-uk","product_tag-research-peptides-europe","product_tag-research-grade-dsip","product_tag-uk-peptide-supplier","product_tag-where-to-buy-peptides-in-uk","product_tag-wholesale-peptides-uk","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product\/871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/comments?post=871"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/media\/145"}],"wp:attachment":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/media?parent=871"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=871"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=871"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}