DSIP is one of the oldest named neuropeptides in the sleep-research literature, yet reliable India-specific sourcing information is hard to find. Here's what it is, where it appears in the science, what it costs, and how to source a documented vial with a purity result you can actually verify.
- DSIP (Delta Sleep-Inducing Peptide) is a synthetic nonapeptide first isolated from rabbit cerebral venous blood during sleep-research experiments.
- At OMNIPOTENT it's HPLC ≥99% pure with a batch COA, from ₹5,899 for the 5 mg vial.
- A 5 mg + BAC water bundle is available at ₹6,899.
What is DSIP?
DSIP (Delta Sleep-Inducing Peptide) is a short nonapeptide — a nine-amino-acid chain — that was first isolated in the 1970s from the cerebral venous blood of rabbits during electrophysiological sleep experiments. Its name comes from that original context: researchers observed delta-wave EEG activity associated with the fraction it was extracted from, and the name stuck even as later work broadened what the peptide is studied for. Unlike many later synthetic secretagogues designed from scratch around a target receptor, DSIP's sequence was identified by isolating and characterising a naturally-occurring fraction first, which is part of why its exact receptor and mechanism have been harder to pin down than compounds engineered against a known target.
Where DSIP appears in the research literature
DSIP is most often referenced in sleep-architecture research, where investigators look at delta-wave (slow-wave) EEG activity and circadian regulation. It also turns up in neuroendocrine and stress-response literature, since some studies have examined its relationship to the hypothalamic-pituitary-adrenal axis alongside its original sleep-EEG context. Despite the name, the exact mechanism by which DSIP produces the effects reported in early papers is still debated in the literature — which is part of why it remains an active reference compound in comparative neuropeptide studies rather than a settled, fully-characterised one.
Why DSIP remains scientifically interesting
Part of what keeps DSIP in the research conversation decades after its discovery is exactly the ambiguity around its mechanism. Later papers have questioned whether "sleep-inducing" is even the most accurate description of its activity, proposing broader neuromodulatory or stress-buffering roles instead — which means DSIP functions less like a settled textbook entry and more like an open research question that different labs keep revisiting from different angles. That's a different kind of research value than a peptide with a fully mapped receptor pathway: DSIP is the kind of compound comparative neuropeptide studies use precisely because its full picture isn't resolved yet.
Storage & stability considerations
Lyophilised DSIP is stable when kept sealed, refrigerated and shielded from light prior to reconstitution — the standard storage condition for short peptide reference materials. Once reconstituted with bacteriostatic water, the solution should be kept cold and used within the typical handling window for nonapeptides, since repeated freeze-thaw cycling and extended room-temperature exposure are the most common causes of degradation researchers report. Logging the reconstitution date and storage conditions for each vial is good practice for any peptide used across a multi-week study.
DSIP compared to other neuropeptides
Researchers working on neuropeptide panels frequently study DSIP alongside other short regulatory peptides such as Semax and Selank — both Russian-derived research peptides with their own distinct literature base. While DSIP's reference point is sleep EEG, Semax and Selank are more commonly discussed in nootropic and anxiolytic-adjacent research contexts. We go into that pairing in detail in our Semax & Selank nootropic peptides guide. The three compounds are sometimes grouped together in comparative neuropeptide panels simply because they're all short, well-established Eastern-bloc-era research peptides with decades of prior literature to build on — even though the specific systems each one is studied in don't fully overlap. That shared vintage, more than a shared mechanism, is usually why a lab stocking DSIP also ends up stocking Semax or Selank.
DSIP price and sizes in India
DSIP is a less commonly stocked peptide than mainstream secretagogues, so pricing and availability vary more between Indian sellers, and it's worth checking that any listing actually specifies a purity figure rather than just a price. At OMNIPOTENT, DSIP is available in two configurations, both HPLC ≥99% with a Certificate of Analysis:
| 5 mg vial | ₹5,899 |
| 5 mg vial + 10ml BAC water | ₹6,899 |
The BAC-water bundle is a convenience option for labs that don't already keep bacteriostatic water in stock for reconstitution. A single 5 mg vial is generally the right starting point for a DSIP research order, since it's a lower-throughput compound than mainstream secretagogues and most comparative studies referencing it don't require large working stocks. Ordering the BAC-water bundle alongside it removes the extra step of sourcing diluent separately before reconstitution can begin.
Reconstitution & storage
DSIP ships as a lyophilised powder. For laboratory handling it's reconstituted with bacteriostatic water and stored cold once in solution, with the unreconstituted vial itself kept refrigerated and shielded from light. Our step-by-step reconstitution guide covers the process and shelf-life considerations for nonapeptides like DSIP, including how to draw and store a working solution without introducing contamination between uses.
Quality, purity & sourcing in India
Every DSIP batch at OMNIPOTENT is HPLC-tested to ≥99% purity, with the batch-specific Certificate of Analysis supplied with your order, and the free coach support that comes with every order applies just as much to a niche compound like DSIP as it does to our best-selling peptides. Mass-spec identity confirmation is available on request. If you're not sure how to read a COA, our purity & COA verification guide breaks down exactly what to check before you buy. Because DSIP is a lower-volume product for most Indian suppliers, batch turnover is slower — which makes it even more important to confirm the COA on hand matches the specific vial you're ordering rather than an older reference document. Orders ship pan-India with 3-day delivery, and our coaches are available free of charge to walk through reconstitution, storage and handling after checkout.
DSIP
Delta Sleep-Inducing Peptide, HPLC ≥99% with a batch COA. 5 mg vial, pan-India delivery in 3 days.
Related research peptides
Researchers studying DSIP typically also keep a few adjacent neuropeptides on hand:
Frequently asked questions
What is DSIP in research?
DSIP (Delta Sleep-Inducing Peptide) is a synthetic nonapeptide first isolated from the cerebral venous blood of rabbits during sleep research. It is supplied strictly as a reference compound for in-vitro research.
How much does DSIP cost in India?
DSIP is available at OMNIPOTENT from ₹5,899 for a 5 mg vial, or ₹6,899 bundled with 10ml bacteriostatic water, all HPLC ≥99% with a COA.
What sizes does DSIP come in?
DSIP ships as a 5 mg vial, available on its own or bundled with 10ml of bacteriostatic water for reconstitution.
Do you provide a COA for DSIP?
Yes, every DSIP batch ships with a Certificate of Analysis confirming HPLC ≥99% purity.
