PT-141 1 vial
A synthetic cyclic heptapeptide melanocortin-receptor agonist.
Observed price
We can't read this listing's size (e.g. a multi-size or combo pack), so we can't compare its cost-per-mg against the market. The sticker price above is exact.
- Availability
- Unavailable
- Checked
- 1 hour ago
Hands you to cernumbiosciences.com — VialGrade doesn’t sell or take payment
Cernum Biosciences
Unclaimed page
0
Lab tests
—
Median purity
28
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — outbound links stay off until the affiliate step is approved.
No independent test of Cernum Biosciences' PT-141 yet
- Cernum Biosciences carries a certificate-integrity flag on record — treat its claims with extra caution.
- PT-141 generally tests around 99.9% purity across 3 independent certificates — but from other makers, so treat it as a benchmark, not proof of this seller's stock.
- We couldn't place this listing's price — its size isn't readable or the market's too thin — so there's no cheap-fake check here.
How to verify this yourself
To verify before you buy: ask Cernum Biosciences for the Janoshik COA for your batch number, then paste it into Verify — VialGrade confirms it's a real, unedited lab record.
Open the Verify toolCompare by real cost
Cheapest PT-141, by price per mg
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 | Umbrella Labs | 40mg total | $130 | $3.25/mg | — | $3.25/mgbest value | View |
| 2 | Bluum Peptides | 10mg total | $35 | $3.50/mg | — | $3.50/mg | View |
| 3 | Peptide Pros | 10mg total | $38 | $3.75/mg | — | $3.75/mg | View |
| 4 | Modern Aminos | 10mg total | $41 | $4.10/mg | — | $4.10/mg | View |
| 5 | Felix Chemical Supply | 10mg total | $43 | $4.30/mg | — | $4.30/mg | View |
| 6 | Ez Peptides | 10mg total | $44 | $4.40/mg | 99.9% | $4.40/mg | View |
| 7 | Simple Peptide | 10mg total | $45 | $4.50/mg | — | $4.50/mg | View |
| 8 | Swiss Chems | 10mg total | $50 | $5.00/mg | — | $5.00/mg | View |
| 9 | Sports Technology Labs | 10mg total | $52 | $5.20/mg | 99.9% | $5.20/mg | View |
| 10 | Chameleon Peptides | 10mg total | $265 | $26.5/mg | 99.9% | $26.5/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.
Understand this compound
What is PT-141?
FDA-approved moleculea.k.a. Bremelanotide, VyleesiBremelanotide, a melanocortin peptide studied in libido and sexual-function research.
Good to know: FDA approval is specific to premenopausal women with acquired, generalized HSDD; use in men or for other purposes is off-label, and it commonly causes nausea and can raise blood pressure.
How does PT-141 work?
A cyclic heptapeptide melanocortin agonist, derived from the same alpha-MSH scaffold as the melanotans, that selectively activates MC3/MC4 receptors in the hypothalamus and limbic system to act on central sexual-desire pathways rather than local blood flow.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is PT-141 researched for?
Studied for hypoactive sexual desire disorder in women and, via central mechanisms, erectile dysfunction in men.
- Tanning & libidoStudied in melanocortin research — skin pigmentation and related pathways.
- Reproductive & hormonalStudied in reproductive-hormone and endocrine-axis research.
How far has the research gone?
FDA-approved (for HSDD in premenopausal women) — approved as Vyleesi in 2019 following two Phase 3 trials.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
What is PT-141 commonly stacked with?
Compounds the research community frequently discusses alongside PT-141. Not a protocol or a recommendation — a map of what to read about next.
What should I check before buying?
- Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
- Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
- Vendor reputation. See how the vendor is talked about in the community before trusting a new name.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
The lab evidence
What we could verify
Each row answers a different question. Passing the identity test doesn’t mean it’s sterile or correctly dosed — we show each answer separately.
Identity — independent test
PartialThe vendor advertises third-party testing, but no independent record confirms it yet.
Measured purity (HPLC)
UnknownNo independent purity figure is on record for this listing.
Batch traceability
UnknownNo specific batch on this listing has been matched to an independent record.
Sterility & endotoxin
Not testedA purity COA does not measure sterility or endotoxins — no such test is on record.
Dose / fill accuracy
UnknownVialGrade does not independently measure vial fill or delivered dose.
These certificates are for PT-141 across every maker VialGrade tracks — not necessarily Cernum Biosciences’s own stock. This listing’s specific evidence is the matrix above.
Independent testing
Independent lab tests on record for PT-141
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.
How does this data get here?
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.
What a certificate does & doesn’t prove
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.
99.9%
highest tested purity
testing advertised, but not independently confirmed
This listing advertises testing, yet no independent record in our index references Cernum Biosciences for PT-141. That doesn't prove the certificate is fake — but until it resolves at the lab, treat the testing claim as unbacked, not verified.
- Vendor claim. Advertises testing.
- Independent confirmation. No record found for Cernum Biosciences. Verify the certificate at the lab before trusting it.
- Compound-level evidence. We do hold 3 independent COAs for PT-141 (median 99.9%) — from other makers. Use it to judge this claim.
Cross-checks the vendor’s testing claim against independent lab records. Purity is read from the lab's certificate as issued — VialGrade doesn't re-run the assay or sample the vial. It reflects one lab's result for one submitted batch, not every vial. Never a statement that a product is safe, sterile, or correctly dosed.
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.
Same compound
See the full PT-141 market — all 16 vendors, price history & lab tests