LP
Highest purity Selank we've sourced
This lot had 99.1% purity per our LC-MS verification. Batch traceable to the COA provided. Will be our go-to source for all cognitive peptide research going forward.
HPLC Verified
>98% Purity
COA Included
AXON Cognitive & Nootropic
DSIP
$79.28
DSIP (Delta Sleep-Inducing Peptide, Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) is a naturally occurring neuropeptide studied for sleep regulation, cortisol modulation, stress response, and antioxidant activity.
| Format | Lyophilized Vial |
|---|---|
| Dosage | 5mg |
| Purity | >98% |
| Sub-Line | AXON |
Also available: DSIP Capsules (5mg) →
In Stock — Overnight and 2–3 day delivery available
Product Information
DSIP | Delta Sleep-Inducing Peptide — Research Grade
DSIP (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) is a naturally occurring nonapeptide first isolated from rabbit thalamic venous blood and identified as a modulator of slow-wave (delta) sleep. It is found endogenously in the hypothalamus, limbic system, pituitary, and blood.
Mechanism of Action
- Delta wave promotion — original isolation studies showed induction of delta EEG activity and slow-wave sleep in rabbits and rodents
- HPA axis modulation — reduces corticotropin (ACTH) and cortisol release in stress models; studied for stress-buffering properties
- Opioid system interaction — studied for modulation of mu- and delta-opioid receptor activity and pain sensitivity
- Antioxidant — reported ROS scavenging activity in in vitro oxidative stress models
Research Areas
DSIP is studied in sleep architecture research, insomnia models, HPA axis regulation, chronic stress, pain modulation, and antioxidant biology.
For Research Use Only. Rainbow Peptide supplies DSIP exclusively for in vitro and laboratory research purposes. Not for human or veterinary use.
Frequently Asked Questions
- What is DSIP?
- DSIP (Delta Sleep-Inducing Peptide, Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) is a naturally occurring neuropeptide studied for sleep regulation, cortisol modulation, stress response, and antioxidant activity.
- Is DSIP for sale at Rainbow Peptide?
- Yes. DSIP is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your DSIP?
- Rainbow Peptide's DSIP is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is DSIP safe for human use?
- No. DSIP is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does DSIP ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of DSIP is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product DSIP
Lot # RP-00041-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews JA
Consistent quality for cognitive research
Semax lot tested above spec. Excellent solubility, expected in vitro behavior. The detailed COA makes this compliant with our supplier verification protocol.
PW
Good purity, great documentation
Mass spec and HPLC data attached to COA. Our internal QC confirmed results. Packaging was excellent — arrived at correct temperature with cold pack still active.
