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Neuropeptides
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DSIP (delta sleep-inducing peptide) is a synthetic nonapeptide studied in research into neuropeptide signalling and sleep-regulation pathways in experimental models.
Purity >= 99% (HPLC)
Supplied as a lyophilised powder
Independent batch identity and purity testing
For laboratory research use only; not for human or veterinary use
DSIP is delta sleep-inducing peptide, a naturally occurring nonapeptide first isolated from cerebral venous blood. Its sequence is Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, with molecular formula C35H48N10O15 and molecular weight 848.8 g/mol. Kyrolabs supplies it as a lyophilised research peptide for laboratory use only, not for human or veterinary use.
The name delta sleep-inducing peptide describes how the molecule was first characterised when isolated decades ago, not a verified function. It is the established chemical name and abbreviation expansion only. DSIP is a research chemical, not a sleep aid or a medicine, and is supplied strictly for laboratory research use.
DSIP is not a controlled drug under the Misuse of Drugs Act 1971 and is not a UK-licensed medicine. Kyrolabs supplies it as a research chemical for laboratory use only. It cannot be sold for human consumption and must not be administered to people or animals. The buyer is responsible for lawful handling, storage and use.
No. DSIP is sold exclusively as a research chemical for in-vitro and non-clinical laboratory work. It is not for human or veterinary use, not for consumption, and not a dietary or therapeutic product. It must not be administered to people or animals under any circumstances.
No. Purity and identity vary by supplier and batch. Kyrolabs releases each batch only after independent testing: purity assessed by HPLC at >=99% and identity confirmed against the expected mass. A certificate of analysis is available so researchers can verify exactly what they receive.
DSIP has CAS number 62568-57-4 and PubChem CID 68816. Its molecular formula is C35H48N10O15, with a molecular weight of 848.8 g/mol and the amino acid sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. These identifiers let researchers cross-check the material against public chemical databases.
DSIP is supplied as a lyophilised (freeze-dried) white to off-white powder. For bench work it is reconstituted with a suitable solvent such as bacteriostatic water, which Kyrolabs stocks alongside its peptide range. Reconstitution is a laboratory preparation step only; the material is not for administration.
Store the lyophilised powder at -20C, kept dry and protected from light. Once reconstituted, hold the solution at 2-8C. Proper storage preserves peptide integrity for laboratory research. DSIP is supplied for research use only and is not for human or veterinary use.
Kyrolabs supplies DSIP to UK researchers with batch certificates of analysis and UK despatch. The peptide is provided as a lyophilised solid, >=99% HPLC, for laboratory research use only. See the certificate of analysis at our CoA library before ordering.
Yes. Every batch is released after independent identity and purity testing, and a certificate of analysis documenting HPLC purity and identity is available. You can view CoAs at our CoA library to confirm the batch specification before purchase.
DSIP, Selank and Semax are distinct research peptides with different sequences and molecular identities; they are not interchangeable. DSIP is the nonapeptide Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. All three are supplied by Kyrolabs as lyophilised research chemicals for laboratory use only, not for human or veterinary use.
Yes. DSIP is a peptide, specifically a nonapeptide of nine amino acids with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. It is not a steroid or a small-molecule drug. Kyrolabs supplies it as a research peptide for laboratory use only.
For the isolation history, mechanistic context and a referenced summary of the model-system literature, see the DSIP research monograph on the Kyrolabs blog. The monograph frames all findings as non-clinical research and makes no human benefit or outcome claims.
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KYRO supplies research-grade peptides for laboratory and in-vitro studies only. They are not medicines, hold no UK marketing authorisation, and are not presented to diagnose, treat, cure, prevent, or mitigate any condition. We do not provide therapeutic, dosing, or medical advice. By placing an order you confirm you are 18+ and acting as a qualified person in a research capacity.
Independent UK supplier of high-purity research peptides. Every batch HPLC-tested, cold-chain stored, and dispatched same-day from our Greater London facility.
© 2026 Kyrolabs Group Ltd.



