Reference
What is DSIP?
DSIP — Delta Sleep-Inducing Peptide — is a nonapeptide, nine residues. The name was given by the researchers who isolated it and describes the circumstances of its discovery rather than anything established about it since.
Classification
| Type | Peptide |
| Chain length | 9 amino acid residues |
| Family | Neuropeptide |
| Origin | Isolated in the 1970s at the University of Bern |
| Supplied as | Lyophilised powder in a sealed vial |
It was isolated in the 1970s from cerebral venous blood, which makes it one of the older compounds in this range. It remains poorly characterised compared to most peptides of comparable age, and the mechanism by which it was originally identified has not been straightforward to reproduce.
Where it sits by length
At 9 residues, DSIP is a short chain — an oligopeptide by the usual convention. The boundary is a convention, not a rule of chemistry — chains up to roughly fifty residues are generally called peptides.
What this page does not cover
Nothing here describes what DSIP does, what it is used for, or whether it is safe. We publish analytical results and ship parcels; we give no guidance on dosing, preparation or use, and that applies to our reference pages as much as to the product pages. The person to ask about any of that is a registered prescriber.
Where it came from
DSIP was isolated from the blood of rabbits during induced sleep, and named for the brainwaves rather than for any structure.
1977 — University of Basel, Switzerland. When was DSIP discovered?
More on DSIP
See DSIP in the range · What is a peptide? · Discovery timeline · All reference
