Certificate of Analysis
Independent laboratory testing confirms purity and composition of this research peptide.
Endo Passed
Overview
Delta sleep-inducing peptide (DSIP) is a naturally occurring nonapeptide — a chain of nine amino acids — with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. Its molecular formula is C35H48N10O15, with a molecular weight of 848.81 g/mol (CAS 62568-57-4). DSIP was first isolated in 1977 from the cerebral venous blood of rabbits during induced sleep by a Swiss research group.
The peptide is classified as amphiphilic, meaning it has both water-attracting and water-repelling regions, a property related to its mixed hydrophilic and hydrophobic amino acid residues. The tryptophan residue at the N-terminus gives it a characteristic UV absorbance profile used for laboratory identification. DSIP is notable for its low molecular weight and amphiphilic structure — the selective membrane separating circulating blood from brain tissue. In its research-grade form, it appears as a white lyophilized powder that dissolves in water.
This product is strictly for research purposes only. Not approved for human or animal use.
PubChem Reference: View compound profile on NIH PubChem
Key Characteristics
MOLECULAR PROFILE
Formula: C35H48N10O15
Weight: 848.81 g/mol
CAS: 62568-57-4
Structure: Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
PHYSICAL PROPERTIES
Form: White lyophilized powder
Solubility: Water-soluble
BBB Penetration: Crosses blood-brain barrier
Storage: Keep refrigerated 36‑46 °F (2‑8 °C)
