Delta Sleep-Inducing Peptide (DSIP) is a neuropeptide composed of nine amino acids (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) and is known for its potential role in sleep regulation. It is commonly used in research settings to study its effects on sleep patterns, neuroendocrine signaling, and stress response mechanisms. DSIP has also been explored for its possible neuroprotective properties and its role in regulating the circadian rhythm and growth hormone release.

DSIP is typically provided in lyophilized (freeze-dried) powder form to ensure long-term stability. For storage, DSIP should be kept in a cool, dry place and stored at -20°C or lower for long-term preservation. After reconstitution with a sterile solvent (such as bacteriostatic water), it should be stored in the refrigerator at 2°C to 8°C and used within a few weeks. It is important to avoid repeated freeze/thaw cycles after reconstitution to maintain peptide integrity.

The purity of DSIP is usually >95%, as confirmed by analytical methods such as HPLC (High-Performance Liquid Chromatography) or Mass Spectrometry (MS). A Certificate of Analysis (COA) is typically provided with the product, confirming the purity, identity, and molecular weight of the peptide, as well as storage recommendations.

DSIP is intended for laboratory research purposes only and is not FDA-approved for clinical use or human consumption. It is commonly used in sleep research, stress studies, and neuroendocrine experiments. Due to its neuroactive nature, DSIP should only be handled by trained professionals within a controlled laboratory environment.