15% off your first order with code STEM15 — Free 2-Day shipping on orders $150+ · Third-party tested
Popular searches
Documented in Peer-Reviewed Research

DSIP

Nonapeptide

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nine-amino acid neuropeptide first isolated from cerebral venous blood. It has been studied for its effects on sleep architecture, particularly delta wave (slow-wave) sleep patterns.

  • Sleep Architecture
  • Delta Wave EEG
  • Neuromodulation
  • Stress Response

Quantified findings reported in the literature

9

amino acid residues in the DSIP nonapeptide sequence

Schoenenberger & Monnier, PNAS 1977

96-99%

HPLC-verified purity range across published batch testing

Stemcode Peptides COA data

Published, peer-reviewed studies

  1. Proc Natl Acad Sci1977

    Characterization of a delta electroencephalogram-sleep-inducing peptide

    Original characterization of DSIP isolated from cerebral venous blood and its effects on delta wave EEG sleep patterns.

    View source on PubMed/DOI ↗
  2. Neurosci Biobehav Rev1986

    DSIP: a review of its functional significance

    View source on PubMed/DOI ↗

Third-party analytical reports

Certificates of Analysis from independent laboratories for products supplied by Stemcode. Reported values describe the analysed material; they are reported as documented and are distinct from the published literature above.

DSIPQalitex
Net content
5.4 mg
Lot
SP26-DSN05
COA #
COA-2026-9149599
Report date
07/17/2026
View full report ↗
DSIPQalitex
Net content
5.4 mg
Lot
SP26-DSV05
COA #
COA-2026-9149555
Report date
07/13/2026
View full report ↗

Stemcode supplies DSIP as a research-grade compound for laboratory research use only — not for human or animal consumption.

View the research-grade product →

Your Cart

Every compound is documented in published, peer-reviewed literature. Our research library indexes 43 studies across 35 journals for 20 compounds.

Our Studies →
43

Peer-reviewed studies in our research library have examined the mechanisms of action of these peptide compounds.

20
Peptide Compounds
35
Journals Referenced
43
Published Studies

Help shape what comes next

Request a Peptide

Tell us what you’re looking for and where to reach you if we add it.