For laboratory research use only — not for human or veterinary use. Not evaluated by the U.S. FDA.
Circadian Peptide
DSIP
A nine-amino-acid neuropeptide examined in research settings for its association with delta-wave sleep architecture and circadian signaling.
Size
Quantity
$29.99
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Delivery
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Cutoff 3:00 PM ET · same-day dispatch
Estimated arrival in 2–3 business days
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Free shipment protection included
DSIP
1 × 5mg · $29.99
99% purity, QC passed
HPLC + mass-spec verified
Shipment protection
Free on every order
Free shipping over $150
Same-day dispatch before 3PM ET
Certificate of Analysis
Third-party tested · Independent analytical lab
5mg
99.66%latest
| Tested | Measured | Purity |
|---|---|---|
| Jul 2026 | 6.12mg | 99.66% |
| Jun 2026 | 5.96mg | 99.65% |
| May 2026 | 6.22mg | 99.74% |
| Jan 2026 | 5.97mg | 99.73% |
| Dec 2025 | 6.42mg | 99.49% |
| Oct 2025 | 6.10mg | 99.63% |
10mg
99.62%latest
| Tested | Measured | Purity |
|---|---|---|
| Jul 2026 | 11.85mg | 99.62% |
| Jun 2026 | 12.25mg | 99.63% |
| Apr 2026 | 12.36mg | 99.67% |
| Jan 2026 | 12.15mg | 99.61% |
Frequently researched together
Commonly studied alongside DSIP.
Compound information
Technical specifications
Molecular profile
| Type | Synthetic nonapeptide |
| CAS number | 62568-57-4 |
| Molecular weight | 848.8 g/mol |
| Amino acids | 9 |
| Sequence | Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu |
| Formula | C35H48N10O15 |
Storage & stability
- ❄️
Lyophilized (powder)
-20°C · stable 2+ years
- ❄️
Reconstituted
2–8°C · use within 30 days
Sources & references
Peer-reviewed literature, for research context
- European Journal of Anaesthesiology
Delta sleep-inducing peptide
2001Pollard BJ, Pomfrett CJD
View source - International Journal of Clinical Pharmacology, Therapy, and Toxicology
Acute and delayed effects of DSIP on human sleep behavior
1981·PMID: 6895513Schneider-Helmert D, et al.
View source - Neuropsychobiology
Effects of delta sleep-inducing peptide on sleep of chronic insomniac patients
1992·DOI: 10.1159/000118919·PMID: 1299794Bes F, Hofman W, Schuur J, Van Boxtel C
View source - European Neurology
DSIP in the treatment of withdrawal syndromes from alcohol and opiates
1984·DOI: 10.1159/000115715·PMID: 6548969Dick P, Costa C, Fayolle K, et al.
View source - European Neurology
Therapeutic effects of delta-sleep-inducing peptide (DSIP) in patients with chronic, pronounced pain episodes
1984·DOI: 10.1159/000115716·PMID: 6548970Larbig W, Gerber WD, Kluck M, Schoenenberger GA
View source - Neuropsychobiology
Effects of DSIP in man: Multifunctional psychophysiological properties besides induction of natural sleep
1983·PMID: 6689058Schneider-Helmert D, Schoenenberger GA
View source - International Journal of Neuroscience
DSIP—a tool for investigating the sleep onset mechanism: a review
1988·DOI: 10.3109/00207458808990695·PMID: 3286557Yehuda S, Carasso RL
View source - Molecules
Delta Sleep-Inducing Peptide Recovers Motor Function in SD Rats after Focal Stroke
2021·DOI: 10.3390/molecules26175173·PMID: 34500605Tukhovskaya EA, et al.
View source
Important research notice
Not for human consumption. This product is sold exclusively for laboratory and in vitro research. It is not intended to diagnose, treat, cure, or prevent any disease.
Any research findings referenced on this page are drawn from published, peer-reviewed literature and are provided for educational context only. They are not product claims and should not be read as medical advice.
By purchasing, you confirm you are a qualified researcher and will handle this material in accordance with all applicable laws and institutional guidelines.