DSIP, short for Delta Sleep-Inducing Peptide, is a nine-amino-acid research peptide first characterized in rabbit experimental work. Its name reflects electroencephalogram findings reported in that early model, while its receptor identity and broader biological role remain unresolved.
For research use only. Not for human or animal use.
DSIP identity and research context
The DSIP sequence is Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. In the original 1977 rabbit model, synthetic DSIP was evaluated under controlled experimental conditions and was associated with changes in delta and spindle electroencephalogram patterns. The study was specific to that model and experimental design.
Later literature has discussed DSIP in relation to circadian, neuroendocrine, and stress-response research, but its natural occurrence, receptor identity, and broader biological role remain incompletely resolved. Proposed HPA-axis, GABAergic, cortisol, seizure, sleep, or stress mechanisms therefore remain unconfirmed rather than established product functions.
Taken together, the published record supports a cautious, model-specific description of DSIP centered on its defined sequence, historical EEG findings, and unresolved mechanism.
The Circadian Research selection provides a broader catalog pathway for materials associated with laboratory investigation of circadian models.
Product specifications and documentation
The current DSIP base product is listed as a Premium Lyophilized material with the following specifications:
- Sequence: Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
- Molecular formula: C35H48N10O15
- CAS number: 62568-57-4
- PubChem CID: 68816
- Physical appearance: white lyophilized powder
- Storage specification: -20°C, tightly sealed and protected from heat and moisture
- Shelf-life specification: 36 months from manufacture when stored according to the product record
- Minimum purity specification: at least 99% for the Premium Lyophilized line
The public COA section includes purity, sterility, and endotoxin reports for applicable Premium Lyophilized lots. The current matching COA provides the batch-specific results, while professional pricing is available after research-account approval and login.
Base product and spray-format relationship
The base DSIP record covers the compound’s identity and the specifications for the lyophilized product. The DSIP Spray record covers its separate package and may reference analytical documentation for the underlying DSIP material and grade. Because the compound identity remains the same across formats, researchers can compare package, storage, and documentation details on the relevant product record.
- Sequence:
- Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
- Molecular Formula:
- C35H48N10O15
- CAS Number:
- 62568-57-4
- PubChem CID:
- 68816
- Synonyms:
- Emideltide, Delta sleep-inducing peptide, DSIP
- Purity:
- ≥99% (HPLC)
- Solubility:
- Soluble in water
- Storage Conditions:
- Store at -20°C, tightly sealed, away from heat and moisture
- Physical Appearance:
- White lyophilized powder
- Shelf Life:
- 36 months from date of manufacture when stored properly
- Quality Verification:
- Third-party tested by certified laboratory
- Manufacturing Standard:
- USA-made, pharmaceutical-grade, GMP compliant
- Intended Application:
- In vitro research applications only
At Limitless Biotech, we provide comprehensive Certificates of Analysis (COAs) for all of our research-only peptides to ensure transparency, purity, and quality in every batch. Each COA includes detailed analytical data that allows researchers to verify identity, concentration, and integrity, supporting reliable and reproducible scientific work. Our commitment to rigorous testing helps researchers move forward with confidence in the materials they use.
Lyophilized DSIP #1324 Sterility COA
Lyophilized DSIP #1324 Endotoxin COA
Lyophilized DSIP #1324 Purity COA
Lyophilized DSIP 5mg #1344 Purity COA
Lyophilized DSIP 5mg #1344 Sterility COA
Lyophilized DSIP 5mg #1344 Endotoxin COA
Lyophilized DSIP 5mg #1350 Purity COA
