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Nootropics & Neuro · SKU P2-5
P-21 5 mg
Peptide studied for neurogenesis in hippocampal research models.
$120 per 5 mg vial · free shipping over $1,000
In stock · ships same day on orders before 2pm ET
5 mg · lot P21-5-031899.8% purity by RP-HPLC (214 nm) · content 5.25 mg · certificate
5 mg · lot P21-5-031899.6% purity by RP-HPLC (214 nm) · content 5.42 mg · certificate
IdentityP-21 confirmed by MALDI-MS
Endotoxin<0.05 EU/mL
Heavy metals<0.01 ppm
LaboratoryBioviridian Inc. · code COA4866 · check it on the lab's site
FormLyophilized powder, sealed vial
Storage-20°C sealed · 2-8°C reconstituted
Buying in quantity?
Wholesale pricing starts at 25 vials per SKU, with net-30 terms for verified institutions. It is quoted per order rather than applied in the cart — ask for a wholesale quote.
Every lot of P-21 in the COA library · Latest lot report
Ships same day on orders before 2pm ET. For laboratory research use only. Not for human or animal consumption.
Frequently bought together
Supplies researchers add to this order
Reconstitution solution30 mL · $25
What is P-21?
P-21 is a synthetic peptide derived from ciliary neurotrophic factor, studied for effects on hippocampal neurogenesis. It is a comparatively recent compound and the published literature on it is thin, which is worth recording in any methods section. Pepstral supplies it as a lyophilized powder for in-vitro laboratory research only.
→Read the full P-21 research guide
What is P-21 studied for?
- Hippocampal neurogenesis models
- CNTF-derived peptide comparisons
- Neurotrophic signalling assays
- Cognitive research models
All applications above are in-vitro or preclinical research contexts. P-21 is sold for laboratory research only and is not for human or animal use.
What does the certificate for lot P21-5-0318 show?
Every lot of P-21 is tested by an independent US laboratory before it is listed. The report for lot P21-5-0318 is in the COA library and the lot number printed on the vial matches it. The current results:
| Test | Method | Lot P21-5-0318 result |
|---|---|---|
| Identity | MALDI-MS | P-21 · conforms |
| Content | HPLC quantitation | 5.25 mg |
| Purity | RP-HPLC (214 nm) | 99.8% |
| Endotoxin | USP <85> | <0.05 EU/mL |
| Heavy metals | USP <232> | <0.01 ppm |
| Sterility | USP <71> | Not Detected |
How is P-21 handled and stored?
Sealed vials are stored at -20°C away from light and keep for 24 months. To reconstitute, add bacteriostatic water slowly down the inside wall of the vial and swirl until clear; never shake. Once in solution, keep at 2 to 8°C and use within our 28-day default for a preserved solution. The concentration table gives the dilution volumes and microlitre aliquots for this vial.
Frequently asked questions
What is P-21 derived from?
Ciliary neurotrophic factor, a member of the gp130 cytokine family.
How well characterised is it?
Less so than the older nootropic peptides. Cite primary sources carefully and expect fewer independent replications.
Is P-21 for human use?
No. Every product on this site is sold for in-vitro laboratory research only and is not for human or animal consumption, diagnostic or therapeutic use.
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