Age & purpose verification
PeptideSeed supplies research compounds for in-vitro laboratory use only. By entering this site you confirm:
Research use only. Not for human or veterinary consumption. Full terms of supply
Delta Sleep-Inducing Peptide is a nonapeptide first isolated in 1977 from the cerebral venous blood of rabbits, and named for the electroencephalographic phenomenon observed in the experiments that identified it.
Delta Sleep-Inducing Peptide is a nonapeptide first isolated in 1977 from the cerebral venous blood of rabbits, and named for the electroencephalographic phenomenon observed in the experiments that identified it.
The sequence is small, highly hydrophilic and carries no cysteine, which makes it one of the more straightforward peptides in the catalogue to handle - it dissolves quickly and requires no reducing precautions.
The N-terminal tryptophan makes it light-sensitive, so vials ship in opaque secondary packaging and solutions should be protected from direct light.
| Compound name | DSIP |
| Classification | Neurobiology research compound |
| CAS number | 62568-57-4 |
| Molecular formula | C35H48N10O15 |
| Molecular weight | 848.81 g/mol |
| Sequence | Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu |
| Purity (this lot) | Pending — per-lot certificate not yet available |
| Endotoxin (this lot) | Pending — per-lot certificate not yet available |
| Appearance | White lyophilized powder |
| Vial size | 10 mg |
| Solubility | Freely soluble in water |
| Storage | Lyophilized: -20 C, desiccated, protected from light. Reconstituted: 2-8 C, use within 30 days. |
| Released lot | PS-3123996 |
Vials arrive lyophilized and sealed under nitrogen. Bring the vial fully to room temperature before breaking the seal — opening a cold vial condenses atmospheric moisture onto the cake.
Direct diluent gently against the inside wall of the vial rather than onto the cake, and allow the material to dissolve without agitation. Vortexing shears longer sequences and introduces air.
Lyophilized: -20 C, desiccated, protected from light. Reconstituted: 2-8 C, use within 30 days.
A full walkthrough is in the reconstitution guide, and the calculator will work out concentration and draw volume for this vial size.
Standard laboratory practice applies: appropriate personal protective equipment, no consumption, no administration to humans or animals, and disposal in accordance with institutional protocol and local regulation.
Per-lot laboratory certificate: pending. A reverse-phase HPLC purity report, an LAL bacterial endotoxin assay and a mass-spec identity confirmation for lot PS-3123996 have not been generated or published. PeptideSeed is working directly with its supplier to obtain genuine per-lot documentation and will publish it here, tied to this exact lot number, once it exists. New to reading these? See how to read a certificate of analysis.
From the EEG phenomenon observed in the 1977 experiments in which it was first isolated.
Only light protection, because of the N-terminal tryptophan. It is otherwise among the easier peptides in the catalogue to work with.
No - no disulfide handling precautions are needed.
DSIP is supplied for in-vitro laboratory research only. It is not a drug, dietary supplement, food or cosmetic, is not approved by the FDA for any use in humans or animals, and no dosing guidance is published for it. Nothing on this page is a therapeutic, structure–function or health claim. Purchasers must be 21 or over and are responsible for compliance with all applicable law. Full terms of supply.
