from$65
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 $300
In stock · ships same day on orders before 2pm ET
Purity (HPLC-UV)≥99.0% on lot P21-2609-X
IdentityConfirmed by LC-MS
FormLyophilized powder, sealed vial
Endotoxin< 0.5 EU/mg (LAL)
Storage-20°C sealed · 2-8°C reconstituted
CertificateView COA for P21-2609-X →
Volume pricing, applied automatically in the cart
| Quantity | Per unit | You save |
|---|---|---|
| 3 to 4 units | $111.60 | 7% |
| 5 to 9 units | $106.80 | 11% |
| 10+ units | $100.80 | 16% |
Verify lot P21-2609-X in the COA library · This month's 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
Reconstitution kitKit · $49.99
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.
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 P21-2609-X show?
Every lot of P-21 is tested by an independent US laboratory before it is listed. The report for lot P21-2609-X is in the COA library and the lot number printed on the vial matches it. The current results:
| Test | Method | Lot P21-2609-X result |
|---|---|---|
| Identity | LC-MS | Matches the calculated mass for the sequence |
| Purity | HPLC-UV, 220 nm | 99.0% |
| Net peptide content | Amino acid analysis | Stated per vial on the certificate |
| Endotoxin | LAL, chromogenic | < 0.5 EU/mg |
| Sterility | USP <71> | Pass |
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 the 28-day window on the certificate. The reconstitution guide covers volumes and syringe units and the concentration table gives the numbers 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.
