Neuropeptides act as signalling molecules within the central nervous system, typically at concentrations far below those of classical neurotransmitters and often…
Read the full description and all 5 compounds →DSIP New
Nine-residue neuropeptide (delta sleep-inducing peptide) first isolated from cerebral venous blood. Studied in vitro for delta-wave EEG modulation and neuroendocrine signalling.
Also searched as delta sleep-inducing peptide · DSIP nonapeptide
At a glance
DSIP is nonapeptide · delta sleep-inducing peptide.
- Supplied as
- Lyophilized (freeze-dried) powder in a sealed vial
- Vial sizes
- 15 mg
- Purity
- HPLC-verified, 99% or higher
- Certificate of analysis
- Published per lot at kinotype.shop/coa
- Ships
- From Texas to all 50 US states
- Intended use
- Laboratory research only. Not for human or veterinary use.
Chemical data
Handling & verification
DSIP (delta sleep-inducing peptide) is a nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, first isolated from cerebral venous blood. It is supplied as a reference compound for in vitro neuropeptide work, and ships as a white lyophilized powder, HPLC-verified at ≥99% purity.
Presentation and storage
Supplied lyophilized in a sealed vial. Store the sealed vial at −20 °C for long-term storage; refrigeration at 2–8 °C is adequate over shorter periods. Keep away from light and moisture.
Allow the vial to reach room temperature before opening, so atmospheric moisture does not condense onto the cake. DSIP contains no cysteine or methionine, so it is less prone to oxidative degradation than sulphur-containing sequences, but it remains sensitive to moisture.
Reconstitution
Reconstitute with bacteriostatic water. Direct the stream down the inside wall of the vial rather than onto the cake, then let it stand and swirl gently — do not shake, as agitation can denature the peptide.
- 15 mg vial in 2 mL diluent gives a 7.5 mg/mL stock
- 15 mg vial in 3 mL diluent gives a 5 mg/mL stock
- 15 mg vial in 5 mL diluent gives a 3 mg/mL stock
Once reconstituted, store at 2–8 °C and protect from light. Avoid repeated freeze-thaw cycles — aliquot the stock if it will be drawn on more than a few times. Our reconstitution calculator works out any other combination.
Verification
Every lot is assayed by HPLC and released at ≥99% purity, and a per-lot certificate of analysis is available stating the batch number, the assay method and the measured purity. If you would like the certificate for the batch currently shipping before ordering, ask and we will send it.
Common questions
Does DSIP come with a certificate of analysis?
Yes. Every lot of DSIP ships with its own certificate of analysis showing HPLC purity, and the current certificate is published on our COA page before you buy — you do not have to order first or email anyone to see it.
What purity is DSIP?
HPLC-verified at 99% or higher. The certificate for each lot states the measured figure, the detection wavelength and the method used, so the number can be checked rather than taken on trust.
How is DSIP supplied and where does it ship?
It is supplied as lyophilized (freeze-dried) powder in a sealed vial, protected against light and impact. Full US shipping, operating from Texas. Delivery estimates are provided by the carrier at checkout.
How should DSIP be stored?
Keep the lyophilized vial cold and dark — refrigerated for near-term use, frozen for longer storage. Once reconstituted it belongs in the refrigerator and its usable life is measured in weeks rather than months. Aliquot rather than thawing the same vial repeatedly, because freeze-thaw cycles cost more stability than most people expect.
How do I reconstitute DSIP?
Add bacteriostatic water slowly down the inner wall of the vial so the stream does not strike the powder directly, then let it dissolve on its own — swirl gently if needed, never shake. The volume you add sets the concentration, so decide the concentration first and work backwards. Our free reconstitution calculator does that arithmetic and gives the volume to draw per aliquot.
Is DSIP for human use?
No. DSIP is supplied strictly as a reference material for laboratory research use only. It is not a drug, food, cosmetic or medical device, it is not for human or veterinary consumption, and it is not intended to diagnose, treat, cure or prevent any disease. We do not provide dosing guidance or protocols of any kind.
See the certificate · Reconstitution calculator · All questions
Handling guides
Other compounds
For laboratory and research use only. Not for human or veterinary use, diagnosis, or consumption. Products are sold to qualified researchers and are not drugs, foods, or cosmetics.