$25
Availability
In stock
Last checked
1 hour ago
An endogenous nonapeptide (delta sleep-inducing peptide) first isolated from cerebral venous blood.
Observed median price
$49
19
Active listings
4 · 98.3%
Independent lab tests
$25–$1,975
Observed price range
2
Known aliases
Read from the certificate, not re-measured by VialGrade.
Understand this compound
The 'delta sleep-inducing peptide', studied in sleep and stress research.
Good to know: Human studies are small, decades old, and mostly used intravenous administration rather than how it is commonly sold today, with inconsistent conclusions about clinical benefit.
A nonapeptide originally isolated from rabbit cerebral venous blood during slow-wave sleep, proposed to modulate sleep-wake regulation and dampen HPA-axis stress reactivity (ACTH/cortisol responses) rather than act as a classic sedative.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
Studied for insomnia and stress-related sleep disturbance.
Limited human data — several small human studies (mostly intravenous) from the 1980s-90s show mixed results, with some finding modest sleep benefits and others finding effects too weak to be clinically meaningful.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
Research-use-only — not FDA-approved
Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.
Read the full US legal overview →General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Compare by real cost
Vials come in different sizes, so the sticker price lies. This ranks every listing by what a milligram actually costs — with independent test purity where we have it.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Peptide Pros | 500mg total5mg/vial × 100 vials each | $1,975 | $3.95/mg | — | $4.02/mgbest value | View |
| 2 | Chameleon Peptides | 15mg total | $60 | $4.02/mg | 98.1% | $4.10/mg | View |
| 3 | Peptide Pros | 250mg total5mg/vial × 50 vials each | $1,383 | $5.53/mg | — | $5.63/mg | View |
| 4 | Ez Peptides | 10mg total | $58 | $5.80/mg | 98.4% | $5.89/mg | View |
| 5 | Felix Chemical Supply | 10mg total | $60 | $6.00/mg | — | $6.10/mg | View |
| 6 | Modern Aminos | 5mg total | $35 | $7.00/mg | — | $7.12/mg | View |
| 7 | Simple Peptide | 5mg total | $35 | $7.00/mg | — | $7.12/mg | View |
| 8 | Bluum Peptides | 5mg total | $39 | $7.80/mg | — | $7.94/mg | View |
| 9 | Peptide Pros | 5mg total | $40 | $7.90/mg | — | $8.04/mg | View |
| 10 | Sports Technology Labs | 5mg total | $47 | $9.40/mg | 90.2% | $10.4/mg | View |
| 11 | Umbrella Labs | 5mg total5 Milligrams each | $51 | $10.2/mg | — | $10.4/mg | View |
| 12 | Felix Chemical Supply | 5mg total | $55 | $11.0/mg | — | $11.2/mg | View |
| 13 | Swiss Chems | 2mg total | $25 | $12.5/mg | — | $12.7/mg | View |
| 14 | Umbrella Labs | 2mg total | $27 | $13.5/mg | — | $13.7/mg | View |
Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg.
Current market
$25
Availability
In stock
Last checked
1 hour ago
$25
$12.5/mg
+69% vs median/mg
Availability
In stock
Last checked
3 hours ago
$27
$13.5/mg
+82% vs median/mg
Availability
In stock
Last checked
2 hours ago
$35
$7.00/mg
-5% vs median/mg
Availability
In stock
Last checked
2 hours ago
$35
$7.00/mg
-5% vs median/mg
Availability
In stock
Last checked
3 hours ago
$39
$7.80/mg
+5% vs median/mg
Availability
Unavailable
Last checked
3 hours ago
$40
$7.90/mg
+7% vs median/mg
Availability
In stock
Last checked
1 hour ago
$47
$9.40/mg
+27% vs median/mg
Availability
In stock
Last checked
3 hours ago
$48
Availability
In stock
Last checked
1 hour ago
$49
Availability
In stock
Last checked
8 days ago
$50
Availability
In stock
Last checked
3 hours ago
$51
$10.2/mg
+38% vs median/mg
Availability
In stock
Last checked
2 hours ago
$55
$11.0/mg
+49% vs median/mg
Availability
In stock
Last checked
1 hour ago
$58
$5.80/mg
-22% vs median/mg
Availability
In stock
Last checked
1 hour ago
$60
$6.00/mg
-19% vs median/mg
Availability
In stock
Last checked
1 hour ago
$60
$4.02/mg
-46% vs median/mg
Availability
Unavailable
Last checked
1 hour ago
$1,383
Availability
Unavailable
Last checked
8 days ago
$1,383
$5.53/mg
-25% vs median/mg
Availability
Unavailable
Last checked
1 hour ago
$1,975
$3.95/mg
-47% vs median/mg
Availability
Unavailable
Last checked
1 hour ago
Independent testing
Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.
Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.
Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.
We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.
Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.
Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.
99.2%
highest tested purity
| Certificate | Manufacturer | Batch | Purity | Content / dose | Lab | |
|---|---|---|---|---|---|---|
| https://www.htraresearch.cn | — | 99.20% | 10.56/10mg · full | Janoshik Analytical Still listed | Verify | |
| EZ Peptides | EZP-DSIP1003062026-02 | 98.39% | 11.37 mg; 11.61 mg; 11.51 mg | Janoshik Analytical | Verify | |
![]() | Chameleon Peptides | — | 98.15% | 14.44 mg | Janoshik Analytical | View |
![]() | Sports Technology Labs | 2025-10-06 | 90.17% | — | MZ Biolabs | View |
![]() | Ascension Peptides | 14-05260628 | 99.39% | — | Unverified lab · Kovera Labs | View |
Tested batches
The full test history for one batch — who picked the sample, who tested it, and what came back. It describes the vials that were tested, never every vial they sold.
Research summaries describe published literature and market data only. They do not establish the identity, quality, safety, or legal status of any listed physical product.