Last updated: May 2026
Summary: DSIP (Delta Sleep-Inducing Peptide) is a synthetic nonapeptide first isolated from rabbit cerebral venous blood during early sleep research. PeptideDropship supplies research-grade DSIP to verified B2B partners under strict research-use-only labeling. 99%+ purity verified by HPLC and mass spectrometry, third-party COAs per batch, no MOQ, US Same-Day California Shipping & 2-Day US Delivery. For research use only: not for human or veterinary use.
Technical specifications
| Parameter | Value |
|---|---|
| Peptide name | DSIP (Delta Sleep-Inducing Peptide) |
| Type | Synthetic nonapeptide |
| Sequence | Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu |
| Sequence (1-letter) | WAGGDASGE |
| Molecular formula | C₃₅H₄₈N₁₀O₁₅ |
| Molecular weight | 848.86 g/mol |
| CAS number | 62568-57-4 |
| Form | Lyophilized white powder |
| Standard pack sizes | 2 mg, 5 mg vials |
| Storage | −20°C lyophilized; 2–8°C after reconstitution |
Manufacturing and quality control
DSIP is produced via solid-phase peptide synthesis (SPPS) and independently verified by a third-party analytical laboratory before release. Every batch ships with a complete Certificate of Analysis. Standard QC includes mass spectrometry for identity, reverse-phase HPLC for purity (99%+ standard), counterion content documentation, Karl Fischer water content, and LAL endotoxin testing available on request.
Wholesale availability
- No minimum order quantity
- Tiered pricing: per-unit cost decreases with monthly volume
- Same-Day California Shipping & 2-Day US Delivery from US-based warehouse
- API integration for automated order routing
White-label and private-label options
Generic, white-label, or private-label fulfillment. See the white-label vs. private-label guide.
Packaging, shipping, and storage
DSIP ships as lyophilized powder in sealed amber vials with tamper-evident closure. Shock-protection packaging is standard. Cold-chain shipping is available. The lyophilized form is stable at room temperature for short-duration transit.
Compliance and labeling
DSIP is supplied to verified B2B partners exclusively for research use under strict research-use-only labeling. Resellers are responsible for maintaining research-use-only labeling, the FDA disclaimer, and compliance with state, local, and international regulations governing research-peptide distribution.
FAQ
What is the historical context of DSIP?
DSIP is a synthetic nonapeptide first isolated by Swiss researchers (Schoenenberger and colleagues) from the cerebral venous blood of rabbits during slow-wave sleep in 1977. The synthetic version has an extensive academic research literature in sleep biology and circadian rhythm research.
What pack sizes are available?
Standard pack sizes are 2 mg and 5 mg lyophilized vials. Custom pack sizes available through private-label fulfillment.
What’s the standard purity?
99%+ verified by HPLC and confirmed by mass spectrometry. The COA ships with every batch.
Are sample COAs available?
Yes. Verified partners can request COAs from recent batches before placing an order.
How is DSIP stored?
Lyophilized at −20°C for long-term stability. After reconstitution, store at 2–8°C and use within the documented stability window appropriate to the research application.
Get started
Apply for verified partner access. Browse the full wholesale catalog or see the peptide dropshipping guide for business model context.
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Partner with peptide dropshipping infrastructure built for B2B research brands. Access 105+ lyophilized SKUs with 0 MOQ, batch-specific 99%+ HPLC and Mass Spectrometry COAs, and Same-Day California Shipping & 2-Day US Delivery ($15 flat-rate shipping, +$2 optional custom vial box). Explore our white-label peptides program, compare private-label peptides options, review our wholesale peptide supplier catalog, or read the complete peptide dropshipping guide.
Transparent B2B Membership Tiers: Tier 1: $397/mo (Standard Wholesale) • Tier 2: $497/mo (10% Off Wholesale) • Tier 3: $697/mo (25% Off Wholesale).
These statements have not been evaluated by the FDA. Supplied strictly for in-vitro laboratory research and analytical reference use. For research purposes only: not for human or veterinary use. PeptideDropship sells research-grade peptides exclusively to verified B2B partners under research-use-only labeling.