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Research Peptide
Delta Sleep-Inducing Peptide (DSIP) is a neuropeptide with sleep-modulating properties.
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9AA
NONAPEPTIDE
Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
Delta
SLEEP WAVES
Promotes delta wave sleep patterns
70+
PUBLICATIONS
In sleep physiology research
1977
DISCOVERED
Isolated from rabbit brain by Schoenenberger
849Da
MOL. WEIGHT
Delta sleep-inducing peptide
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Research
Delta Sleep-Inducing Peptide (DSIP) is an endogenous neuropeptide first isolated in 1974 by the Schoenenberger-Monnier group from the cerebral venous blood of rabbits placed in an electrically induced sleep state. It is a nonapeptide with the primary sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE), corresponding to the molecular formula C35H48N10O15 and an average molecular weight near 848.8 g/mol (monoisotopic mass approximately 848.34 Da). This listing supplies 10 mg of lyophilized DSIP (CAS 62568-57-4) as a reference material intended strictly for in-vitro and preclinical laboratory investigation. It is not a drug, dietary supplement, or article for human or veterinary use.
The peptide is amphiphilic, carrying both hydrophilic and hydrophobic residues, and reference reports describe its capacity to associate with membrane systems. Because DSIP occurs naturally in mammalian tissue and plasma, it has served primarily as a probe compound in neurochemistry and chronobiology research rather than as a synthetic novelty. Its short chain length and unblocked N- and C-termini make it a convenient model peptide for laboratory work on small-peptide stability, membrane interaction, and receptor-binding assays.
Published preclinical and in-vitro literature on DSIP is exploratory and, in several areas, contradictory — findings should be treated as preliminary and hypothesis-generating rather than established. Reported lines of laboratory investigation include:
This material is sold for laboratory research use only. Nothing here constitutes medical advice or a health claim, and DSIP is not intended to diagnose, treat, cure, or prevent any condition. Handling should follow standard laboratory practice for lyophilized peptides.
Each batch of DSIP (10mg) is characterized to a labeled purity of at least 98%. Reversed-phase high-performance liquid chromatography (RP-HPLC) is used to quantify chromatographic purity and to resolve related peptide impurities, deletion sequences, and oxidation products from the main peak. Identity is confirmed by mass spectrometry (ESI-MS or MALDI-TOF), with the observed mass compared against the theoretical value derived from the molecular formula C35H48N10O15 to verify the intended nonapeptide sequence.
A batch-specific Certificate of Analysis (COA) is available and typically documents HPLC purity, the mass-spectrometry identity result, peptide content, and appearance. Researchers verifying incoming material can cross-reference the reported mass and retention profile against the COA lot number. As with other small peptides containing a tryptophan residue, DSIP is best protected from prolonged light and oxidative exposure during weighing and reconstitution to preserve analytical integrity for downstream assay work.
The product is 10 mg of lyophilized Delta Sleep-Inducing Peptide (CAS 62568-57-4), the nonapeptide WAGGDASGE with molecular formula C35H48N10O15. It is provided as a reference material for in-vitro and preclinical laboratory research only and is not for human or veterinary use.
Purity is assessed by reversed-phase HPLC to a labeled specification of at least 98%, and identity is confirmed by mass spectrometry (ESI-MS or MALDI-TOF), comparing the observed mass against the theoretical value for the molecular formula C35H48N10O15 (average molecular weight approximately 848.8 g/mol; monoisotopic mass approximately 848.34 Da). A lot-specific Certificate of Analysis documenting these results is available for the batch.
Published laboratory work has explored DSIP in the context of sleep and circadian-rhythm correlation studies, delta-wave characterization in rodent models, blood-brain-barrier and membrane-permeability assays, and neuroendocrine signaling in isolated tissue. These findings are preliminary, sometimes inconsistent between laboratories, and are not evidence of any human effect.
Its short nine-residue sequence, amphiphilic character, and unblocked termini make it a convenient substrate for studying small-peptide behavior — including membrane association, degradation kinetics, and oxidation of its tryptophan residue — under controlled in-vitro conditions.
As a lyophilized peptide containing a light- and oxidation-sensitive tryptophan residue, DSIP should be handled using standard laboratory practice for research peptides: minimize exposure to light and air during weighing and reconstitution, and follow the general storage guidance provided elsewhere on this page. This preserves chromatographic integrity for downstream assays.
This product is sold strictly for in-vitro research and laboratory use only. It is not intended for human or animal consumption, diagnostic purposes, or therapeutic application.
By purchasing this product, you confirm that you are a qualified researcher operating within an appropriate laboratory environment and will use this compound in accordance with all applicable local, state, and federal regulations.
Amino Science Labs assumes no liability for misuse of this product outside of its intended research application.
No. The available literature is exploratory and preclinical, with no approved therapeutic use. This material is intended solely for laboratory research, and no medical, therapeutic, or performance claims are made about it.
