For laboratory research use only. Not for human consumptionEvery vial: QR to its own batch certificateUK-registered · third-party tested

DSIP

Name: DSIP
Brand: Axyn Peptides
SKU: AXN-DSIP
Price: 22 GBP
Availability: OutOfStock

Research use only · not for human consumption

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide, sequence WAGGDASGE, supplied as a 5 mg lyophilised research vial. A small acidic peptide studied at the neuromodulatory level. Third-party tested with a Certificate of Analysis. For laboratory research use only, not for human or animal consumption. Read the research on DSIP →

£22.00

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SKU: AXN-DSIP

Category: Neuropeptides

Description

✓ Per-batch CoA✓ QR-to-CoA on vial✓ HPLC + MS (Janoshik)✓ Same-day UK dispatch

What it is

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring linear nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE) and a molecular weight of roughly 848.8 g/mol for the free base. First isolated from rabbit brain in 1974, it is a small, acidic peptide carrying two aspartate and glutamate carboxyls plus a C-terminal glutamate, with a single N-terminal tryptophan, no cysteine and no disulfide bridge. AxYn supplies this molecule as a 5 mg research vial, commonly as the acetate salt.

Research context

DSIP is studied at the molecular and neuromodulatory level. Despite decades of investigation no specific receptor and no encoding gene have been definitively identified, and no single primary mechanism is agreed. Proposed pathways explored in preclinical work include modulation of GABAergic signalling and reported effects on endogenous antioxidant defences. It is used purely as a reference peptide for in-vitro study by qualified researchers.

Research activity data from NIH

351 studies indexed on PubMed (NIH) for DSIP as of August 2026. A measure of research volume only, not a claim of efficacy.

Sources: PubChem CID 68816 · PubMed: DSIP (NIH)

Handling and storage

Supplied lyophilised. For laboratory handling the powder is reconstituted with bacteriostatic water. Store the lyophilised vial cold, around minus 20C, protected from light, since the tryptophan residue is light-sensitive. Reconstituted material is cold-chain dependent and shorter-lived.

Testing and quality

Every batch is third-party tested. The Certificate of Analysis should state the salt form, HPLC purity with chromatogram, and mass spectrometry confirming the expected 848.8 mass. Supplied for laboratory research use only. Not for human or animal consumption.

Specification

PubChem CID (NIH)68816

SEQUENCETrp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE)

MOLECULAR FORMULAC35H48N10O15

MOLECULAR WEIGHT848.8 g/mol

CAS NUMBER62568-57-4

PURITY>=98% (HPLC)

FORMLyophilised powder

APPEARANCEWhite to off-white lyophilised powder

SHELF LIFE36 months at -20 C, sealed

RECONSTITUTION STABILITYUse within 2 to 4 weeks at 2 to 8 C after reconstitution

Frequently asked questions

What is DSIP?

What it is
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring linear nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE) and a molecular weight of roughly 848.8 g/mol for the free base. Supplied lyophilised for laboratory research only.

What does the research say about it?

351 studies indexed on PubMed (NIH). We link the live record so you can review it. No health claims are made.

Is DSIP legal to buy in the UK for research purposes?

Yes. Not a licensed medicine; supplied as a research chemical for laboratory research use only, to researchers aged 18+. Not for human or veterinary use.

How do I reconstitute it?

Reconstitute with bacteriostatic water; the volume added sets the concentration. See our reconstitution guide. No dosing guidance is provided.

What testing has been done on this product?

Third-party tested (Janoshik): HPLC purity with chromatogram and mass-spec identity, per-batch Certificate of Analysis, QR code on the vial linking to it.

How should I store it and what should it look like?

Store cold and dark (−20 C long term); keep any reconstituted solution refrigerated. A white to off-white lyophilised powder is normal, giving a clear colourless solution once reconstituted.

Research handling and related compounds

New to handling lyophilised material? See our reconstitution guide, the storage and shelf-life guide, and how to read a Certificate of Analysis.

Related research compounds in Cognitive, Mood & Sleep: Semax, Selank.

Additional information

Strength	5 mg

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