DSIP (Delta Sleep-Inducing Peptide) is a synthetic nonapeptide studied in sleep, neuroendocrine and stress-response research. It is supplied as a high-purity white lyophilized powder at >=99% HPLC purity in sealed vials. DSIP is investigated in research on sleep regulation, stress adaptation and related neuroendocrine pathways, and is commonly applied in cell-based and preclinical neuroscience studies. The lyophilized format provides high stability and easy reconstitution for consistent experimental dosing.. Each batch is manufactured under controlled quality systems and batch-specific certificates of analysis are obtainable on request. Store the sealed vial at 2-8 degree C away from direct light and humidity; for extended storage keep at -20 degree C and minimize freeze-thaw cycles. Small sample orders and bulk quantities are both welcomed, and we provide OEM, private-label and secure neutral-packaging services for global delivery. Laboratory research use only.