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P21 10mg | 10-Vial Kit | Cell Cycle Regulatory Protein
AsiaChinaRecovery & Healing

P21 10mg | 10-Vial Kit | Cell Cycle Regulatory Protein

$440

In stock

For in vitro laboratory research only. Not for human or veterinary consumption.

China Warehouse P21 10mg | 10-Vial Kit — CNTF-derived neuroprotective peptide — studied for neurogenesis stimulation, CNTF-pathway activation, and adult hippocampal neural stem cell proliferation research. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only. International shipping: 7–14 days

SKU
VES-P21-P21-10MG-10VIAL
Format
0.22 lbs
Use
Laboratory research only
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What is P21?

P21 (CNTF-derived neuroprotective tetrapeptide) is a 4-amino acid CNTF-derived peptide. Synthetic tetrapeptide derived from ciliary neurotrophic factor (CNTF) activating CNTF receptor (CNTFRα) complex and downstream JAK-STAT3 signalling. Promotes neuronal survival, reduces neuroinflammation, and supports neural progenitor cell activity in CNS injury and neurodegeneration models.

Research Applications

CNTF Receptor Activation

CNTFRα complex binding and JAK-STAT3 pathway research

Neuronal Survival

Anti-apoptotic neuroprotection in ischemia and excitotoxicity models

Neural Progenitor Biology

Proliferation and differentiation of neural progenitor cells

Neuroinflammation

Microglia and astrocyte modulation, inflammatory cytokine reduction

vs Full CNTF

Minimal active fragment potency and CNS penetration comparison

Quick Specs

Form Lyophilized powder
Purity ≥99% by HPLC — every batch
CAS Number 9001-37-0 (for recombinant forms; sequence-dependent)
Molecular Formula Sequence-specific (human p21 protein ~164 amino acids)
Peptide Type Cyclin-Dependent Kinase Inhibitor (CDKI) / Cell Cycle Regulatory Protein
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house Fmoc SPPS — Qingdao, China
Storage -20°C sealed | 2–8°C reconstituted (2–4 weeks)
Shelf Life 24 months unopened

Certificate of Analysis (COA)

Vesta COA Report

✓ Verify on Janoshik

Frequently Asked Questions

How do I reconstitute this peptide?
Add 1–2mL bacteriostatic water to the lyophilized vial by directing water down the inner wall of the vial. Swirl gently until the powder fully dissolves — do not shake or vortex. The solution should be clear and colourless. Use immediately or refrigerate at 2–8°C.
How should this peptide be stored?
Store lyophilized peptide vials at −20°C for long-term storage. Once reconstituted, store at 2–8°C (refrigerator) and use within 21–28 days. Avoid repeated freeze-thaw cycles, direct light, and heat exposure.
What purity is this Vesta compound and how is it verified?
All Vesta compounds are tested to ≥99% purity by HPLC peak area analysis on every production batch. Molecular identity is confirmed by mass spectrometry. A Certificate of Analysis (COA) is published on the product page and independently verifiable at verify.janoshik.com using the batch reference number.
Peptide Research Tools: Use Vesta’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
International shipping: 7–14 days
Research use only

This material is supplied strictly for in vitro laboratory research. It is not intended for human or veterinary consumption, diagnosis, treatment, or household use.