DSIP (Delta Sleep-Inducing Peptide) — wholesale research supply

For research use only · Not for human consumption · Not for veterinary use. This product is supplied for in-vitro research, analytical method development, and laboratory reference standard use only. Not approved for human or veterinary administration. Buyer is responsible for end-use classification in the destination jurisdiction.

Overview

DSIP (Delta Sleep-Inducing Peptide) is a synthetic nine-amino-acid nonapeptide research compound originally isolated from the cerebral venous blood of rabbits during slow-wave sleep. The sequence is Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. DSIP is supplied as a research-grade lyophilized peptide, intended for in-vitro cell-based assays, neuropeptide receptor research, and analytical method development. SPK Pharma India supplies DSIP as a documented, lot-traceable research compound for distributors, contract manufacturers, and academic laboratories. The compound is supplied for research and analytical applications only, and is distinct from the cognitive / neurotrophic heptapeptides in the same family (Selank, Semax) by both sequence and length.

Specifications

Research context

DSIP is studied in cell-based research on neuropeptide signalling, with the nonapeptide backbone providing the structural basis for receptor-engagement studies in defined neuronal and glial cell lines. In-vitro receptor-binding assays, downstream signalling studies, and analytical method development for LC-MS quantification of the peptide in research samples are the typical research applications. The Trp residue at the N-terminus provides a useful spectroscopic handle for UV absorbance and fluorescence-based assays.

The compound is also used as an analytical reference standard in laboratories that study neuropeptide degradation, peptide stability in biological matrices, and the development of LC-MS/MS methods for neuropeptide quantification. SPK Pharma India does not make therapeutic, clinical, diagnostic, or dosing claims for this product. The compound is supplied strictly for in-vitro research, analytical method development, and reference-standard work.

For researchers new to the compound, the standard analytical reference points are CAS 62568-57-4, the nine-amino-acid sequence WAGGDASGE, the calculated molecular weight of 848.81 g/mol, the lyophilized powder form, and the documented purity threshold (≥99% HPLC).

Packaging and supply

• 5 mg research vial — for method development, cell-based assays, and reference-standard qualification. Standard MOQ: 5 vials.
• Bulk pack — on application, for annual supply contracts and recurring orders.

Distributor pricing is available on application. Annual supply contracts with scheduled recurring dispatch are available for repeat buyers. Lead time for in-stock SKUs is typically 5 business days from purchase order confirmation; lead time for scheduled production is typically 4 to 6 weeks.

Quality and documentation

Every lot of DSIP ships with a lot-matched Certificate of Analysis documenting identity (mass spectrometry and amino acid analysis), purity (HPLC), appearance, lot number, and synthesis batch reference. A representative sample of every lot is independently verified by a third-party analytical laboratory before release. MSDS is supplied with every shipment. The COA template, the lot-traceability workflow, and the third-party verification scope are documented on the Quality page.

Storage and handling

• Store at -20°C in the original sealed container.
• Protect from light and moisture. The Trp residue is mildly light-sensitive.
• Allow the sealed container to reach room temperature before opening, to avoid condensation.
• Reconstitute in sterile, low-endotoxin research-grade water or in a mild buffer at the working concentration required by the assay.
• Do not refreeze once reconstituted; aliquot and store at working concentration.
• For short peptides, gentle mixing is sufficient; avoid vigorous vortexing.

Shipping

DSIP is shipped lyophilized in sealed vials within temperature-validated packaging. International lanes are routed through dedicated life-science logistics partners with cold-chain handling. Standard dispatch is within 5 business days of purchase order confirmation. SPK Pharma India ships to the United States, the European Union, the United Kingdom, Canada, MENA, APAC, and LATAM. Full export documentation, including commercial invoice, packing list, certificate of origin, COA, and MSDS, is included with every shipment. Destination-specific documentation is supported on request.

Compliance

This product is supplied for research use only. It is not a drug, not a finished dosage form, and not approved for human or veterinary administration. SPK Pharma India does not make therapeutic, clinical, diagnostic, or dosing claims for this product. The buyer is responsible for end-use classification in the destination jurisdiction and for ensuring that downstream handling is consistent with research-use-only protocols.

Lead form CTA

To request a wholesale quote for DSIP, contact the trade desk with the subject line "DSIP wholesale quote" and your company details, expected volume, and destination country. Distributor pricing is available on application. The desk responds within one business day.

Related compounds

• Selank — tuftsin analogue heptapeptide research peptide
• Semax — ACTH 4-10 analogue heptapeptide research peptide
• Epitalon 10 mg — tetrapeptide bioregulator research peptide
• Pinealon — tripeptide bioregulator research peptide
• FOXO4-DRI — 46-amino-acid D-retro-inverso research peptide