How it works
Delta sleep-inducing peptide (DSIP) is an endogenous nonapeptide first identified in the cerebral venous blood of rabbits during electrically induced slow-wave sleep. Its precise receptor target remains unresolved, but published research documents effects on delta-wave sleep patterns, modulation of the hypothalamic-pituitary-adrenal axis, and interactions with several neurotransmitter and neuroendocrine systems. It crosses the blood-brain barrier and is studied as a regulatory rather than a sedative peptide.
Learn more about the science →Certificate of Analysis+
LC-MS identity, HPLC purity (≥99%), mass spec confirmation, endotoxin by LAL, appearance. Third-party ISO-17025 verified.
View full certificate →Specifications+
Storage & handling+
Lyophilized: −20°C, 24 months. Reconstituted: 2–8°C, use within 30 days. Reconstitute with bacteriostatic water; swirl gently, protect from light.
We ship in insulated parcels with phase-change cooling and a tamper-evident seal.
FAQs+
Is DSIP's receptor known?+
Not definitively. DSIP is well characterized as an endogenous peptide, but its precise binding target remains an open question in the literature. It is studied as a neuromodulator rather than through a single receptor.
Why is DSIP in Neurological Research?+
It is a central neuropeptide studied for sleep and neuroendocrine regulation, which places it in Neurological Research's cognition-and-repair scope.
What's a typical reconstitution concentration?+
Investigator-dependent. A common preparation is 2 mL bacteriostatic water per 5mg vial, yielding 2.5 mg/mL.
How is DSIP quality verified?+
LC-MS identity and HPLC purity per lot, mass spec against the theoretical mass, and a third-party ISO-17025 repeat assay.
Is DSIP stable in solution?+
Yes, with standard cold storage. 30 days at 2–8°C is the operating spec.
Is DSIP subscription-eligible?+
Yes. 15% off on a 60-day cycle once it returns to stock.
The research behind this compound, cited in full.
Provided for context only. None of the studies cited below evaluate hábit material specifically; they document the published literature on the compound and its mechanism. Research-use claims are not therapeutic claims.
- [01] Schoenenberger GA. & Monnier M. Proc Natl Acad Sci USA 74 (1977): 1282–1286.
- [02] Graf MV. & Kastin AJ. Neurosci Biobehav Rev 8 (1984): 83–93.
- [03] Kovalzon VM. & Strekalova TV. Neurosci Behav Physiol 36 (2006): 341–345.
- [04] Acute and delayed effects of DSIP on human sleep behavior
Verified buyer notes
Initials only — every quote is verified against an order record. We don’t ghost-write reviews.
“COA matched what we ran in-house. Powder reconstituted clean, no haze. Did exactly what we needed it to.”
“Switched after two bad lots from a previous source. Three orders in, zero issues.”
“Asked support a purity question and got the raw HPLC trace back within the hour. That transparency is why we reorder.”