P-21 (P021) 1 vial
A synthetic peptidomimetic derived from a biologically active region of ciliary neurotrophic factor (CNTF).
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
- 3 hours ago
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Modern Aminos
Unclaimed page
0
Lab tests
—
Median purity
60
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — we take no payment and hold no stock. These are sold for laboratory research use only, not for human consumption; the seller sets their own terms and age limits at checkout.
No independent test of Modern Aminos' P21 yet
- We hold no independent tests for P21 from any maker yet — unknown stays visible.
- 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 Modern Aminos 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 toolUnderstand this compound
What is P21?
Preclinical / animal onlya.k.a. TFP5 (related fragment)A CNTF-derived peptidomimetic studied in neurogenesis research.
Good to know: Research is confined to animal models of stroke and neurodegeneration; no human safety or efficacy data exist.
How does P21 work?
A peptide derived from the CDK5-activating cofactor p35, designed to inhibit pathological CDK5/p25 hyperactivity implicated in neuronal apoptosis after injury or in neurodegeneration.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is P21 researched for?
Studied for neuroprotection in ischemic stroke and neurodegenerative disease models, including Alzheimer's and Parkinson's.
- Cognitive & moodStudied in memory, focus, mood, and neuroprotection research.
How far has the research gone?
Preclinical / animal research — efficacy shown in rodent stroke and Parkinson's models (often via the related peptide 'TFP5'), with no identified human 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 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
UnknownNo independent third-party COA is advertised or on record for this listing.
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.
No third-party testing to cross-check
This listing doesn't advertise independent lab testing, and we don't hold an independent record for Modern Aminos's P21. Absence of a certificate isn't proof of anything — but there's nothing here to verify.
- Independent testing. No third-party COA advertised or on record.
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 — and it says nothing about how the peptide was MADE. A high purity number can come from an uncontrolled facility; "pharmaceutical grade" is a marketing phrase unless a GMP certificate backs it. Never a statement that a product is safe, sterile, or correctly dosed. What “grade” actually means
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 P21 market — all 3 vendors, price history & lab tests