DSIP, also named Delta Sleep-Inducing Peptide or Emideltide, is a naturally occurring nine-amino-acid neuropeptide initially extracted and identified from rabbit cerebral venous blood in the 1970s. As a key research molecule in neurophysiology, DSIP exhibits a unique ability to penetrate the blood-brain barrier, a feature that distinguishes it from numerous large peptide molecules that cannot easily access central nervous system tissues. This characteristic makes it an invaluable research tool for studying brain-related biological pathways.

Different from traditional sedative or hypnotic substances that suppress overall neural activity, DSIP works by regulating the natural sleep cycle instead of forcing sedation. Research demonstrates that DSIP facilitates the formation and maintenance of delta slow-wave sleep, which represents the deep restorative sleep stage critical for tissue repair, energy recovery and memory consolidation. Beyond sleep modulation, extensive preclinical laboratory investigations have uncovered a broad spectrum of biological functions of DSIP. It can modulate the hypothalamic-pituitary-adrenal (HPA) axis, helping to regulate the release of stress-related hormones and mitigate physiological responses induced by chronic stress.

In neuroprotection research models, DSIP displays potent antioxidant properties, which help neutralize excess reactive oxygen species and reduce oxidative damage to neurons. It also participates in neuroendocrine regulation and immune system modulation, supporting multiple research directions including stress physiology, brain aging, and neuroinflammation studies.

Our DSIP is synthesized using advanced solid-phase peptide synthesis (SPPS) technology. After chain assembly, the crude peptide undergoes multiple rounds of purification by preparative HPLC to remove truncated peptide fragments, residual protecting groups and other impurities. Every production batch goes through a full quality control workflow, including HPLC purity test, mass spectrometry sequence confirmation, moisture detection and appearance inspection. Complete documentation including COA, HPLC chromatogram and MS spectrum can be provided for each shipment to meet laboratory record requirements. The lyophilization process is adopted to lock molecular stability, greatly slowing down peptide degradation during shipment and long-term storage. This product is widely supplied to university laboratories, biotech research institutes and pharmaceutical R&D teams for preclinical experiments on sleep physiology, anti-stress mechanisms, neuroprotection and neuroendocrine regulation.