DSIP10mg research peptide · Canada
Buy 2 and save $9.00 — 10% off every unit
- Ships from Vancouver — no customs, no duties
- Dispatched in 1–2 business days · tracked & insured
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Key facts
- Compound:
- DSIP
- Purity:
- ≥99%, verified by HPLC
- Tested by:
- independent third-party lab (HPLC purity and measured content)
- Molecular weight:
- 848.94 g/mol
- Certificate of analysis:
- available on request · members-only lab results
- Ships from:
- Vancouver, BC — typically 2–5 business days, tracked and insured, no customs
- Intended use:
- in vitro laboratory research only — not for human or veterinary consumption
Page last updated
DSIP stands for delta sleep-inducing peptide. It’s a small, nine-amino-acid peptide first found in the 1970s while scientists were studying sleep, which is how it got its name. It comes as a freeze-dried powder in 10 mg vials.
DSIP, supplied to Canadian researchers by Popular Peptides. Available in 10 mg, ≥99% purity, molecular weight 848.94 g/mol. Tested by an independent lab for purity and content (HPLC); the lab report (COA) for your batch is available on request. Ships tracked and insured from Vancouver by Canada Post Xpresspost, usually 1 to 4 business days, with no customs step and no brokerage fee.
Sold as a laboratory research material only, for in vitro use. It isn’t a medicine and isn’t meant for people or animals.
Primary literature
- Characterization of a delta-electroencephalogram (-sleep)-inducing peptide — PNAS, 1977
Schoenenberger et al. Reported the isolation and characterisation of the peptide from rabbit blood that induced delta-EEG activity in recipient rabbits.
Cited for research context. A citation is not a claim that this compound is safe, effective, or approved for any use.
Research Use Only. This compound is a laboratory material for in vitro research. It is not a medicine and is not for human or veterinary use. If you’re looking for help with your health, please speak with a doctor or pharmacist.
New to research compounds? Start here. Buying in Canada: why domestic means no customs. Checking quality: how to read a COA.
What is DSIP? DSIP at a glance
In short: DSIP is $44.99 CAD at Popular Peptides Canada, ships from Vancouver with no customs, and usually arrives in 1–4 business days.
- What it is
- DSIP stands for delta sleep-inducing peptide. It’s a small, nine-amino-acid peptide first found in the 1970s while scientists were studying sleep, which is how it got its name.
- Price
- $44.99 CAD. Prices are in Canadian dollars, so there’s no exchange-rate surprise.
- Size
- 10mg
- Purity
- ≥99%, tested by an independent lab (HPLC purity and content)
- Ships from
- Vancouver, BC, to anywhere in Canada. It never crosses a border, so there’s no customs and no brokerage fee.
- Delivery
- Dispatched in 1–2 business days by Canada Post Xpresspost, tracked and insured. Usually 1–2 days in BC, 2–3 on the Prairies and to major Ontario and Québec cities, 2–4 in Atlantic Canada.
- Shipping cost
- Free over $300 CAD, otherwise a flat $20.
- Lab report
- Available on request. Lab results are kept in our members-only area.
- Pay with
- Visa, Mastercard, Apple Pay, Google Pay or Interac e-Transfer (an extra 10% off by e-Transfer).
- Sold for
- Laboratory research only. It isn’t a medicine and isn’t meant for people or animals.
New to this? Our plain-language guide explains everything from lab reports to delivery, and our Canada vs imported guide shows why ordering inside Canada is simpler.
DSIP — compound background
Nonapeptide (9 residues), strongly acidic
DSIP was isolated in the 1970s from the cerebral venous blood of rabbits in slow-wave sleep, in one of the more unusual isolation efforts in neuropeptide research. The name records the assay it was found by rather than a settled mechanism — its physiological role remains debated in the literature.
Solubility & reconstitution
Water-soluble, but distinctly more acidic than the other short peptides here: two acidic residues (Asp, Glu) and no basic residues give it a low isoelectric point. Solubility is therefore good at neutral and alkaline pH and drops as the solution approaches the pI in the acidic range — the opposite pH behaviour to cationic peptides like Selank.
Storage
Sealed at -20 °C. Keep dry; the acidic lyophilizate is hygroscopic. Refrigerate at 2–8 °C, protected from light on account of the N-terminal tryptophan.
Commonly worked with for 2–3 weeks at 2–8 °C.
Stability
DSIP combines two independent liabilities — a photo-labile N-terminal residue and an Asp-Ala isomerisation site. It rewards careful storage more than most short peptides.
Reading the Certificate of Analysis
Confirm the molecular ion near 848.9 Da. Watch for isomerised species, which are isobaric with the parent (identical mass) and therefore invisible to mass spectrometry — they show only as additional or broadened RP-HPLC peaks. This is a case where the chromatogram is more informative than the mass spectrum.
Background and handling information is educational, for in-vitro laboratory research use only — not medical advice, dosing, or usage guidance, and not a description of use in humans or animals.
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DSIP laboratory reference
DSIP is nonapeptide (9 residues), strongly acidic. Handling requirements follow from that chemistry rather than from generic peptide guidance — the pages below cover each aspect specifically for this compound.
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
DSIP compared with
Reference content is educational laboratory-handling information for in-vitro research use only — not medical advice, not usage guidance, and not a protocol.