Peptides

P21 10mg

$110.00

P21 is a synthetic CNTF-derived peptide, modified with an adamantane group for stability. Available in 10mg lyophilized vials. Third-party HPLC-MS tested, 99% purity. For research use only. Not for human consumption.

COA VerifiedView Purity Report
99.15%

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Disclaimer: This product is intended solely for laboratory research purposes. It is not for human consumption, medical use, veterinary use, or household application. All product information on this website is provided for educational purposes only. Researchers must handle this product with appropriate safety protocols and comply with all applicable regulations. Please review our Terms & Conditions before purchasing.

All p21 vials are independently third-party tested and HPLC-verified at 99% purity. The Certificate of Analysis (COA) below is from the most recent tested lot. Click the certificate to open the full-size document, or browse our entire COA library here.

Certificate of Analysis

P21 10mg

Verified
99.15% Average Purity (HPLC-MS)

COA Number

2609240​610

Lot

PH-p210-0202

Reported

09/26/2026

10mg – HPLC-MS Purity Report (Reported September 26, 2026)

P21 10mg HPLC-MS Certificate of Analysis, lot PH-p210-0202, COA 2609240610

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View Certificate of Analysis

P21 Peptide Specifications

Property Details
Product Contents P21 10mg Lyophilized Powder in 3mL vial.
Available Sizes 10mg
Peptide Type Synthetic CNTF-derived peptide mimetic (adamantane-modified tetrapeptide)
Purity 99% (HPLC-MS verified, third-party tested)
Molecular Formula C27H42N6O8
Molecular Weight 578.66 g/mol
Sequence Ac-Asp-Gly-Gly-Leu-NH2 (C-terminal adamantane-modified, CNTF residues 148-151)
CAS Number 1246751-68-7
Appearance White to off-white lyophilized powder in sealed glass vial
Storage Store at ≤6°C, sealed, away from heat, light, and moisture.
Solubility Soluble in water

Legal Disclaimer: P21 is sold by Protide Health for laboratory research purposes only. This product is not approved by the FDA for human consumption, medical use, or veterinary use. By completing a purchase, you verify that you are a qualified researcher and must comply with applicable local, state, and federal regulations. Please review our Terms & Conditions before purchasing.

Select vial strength

10mg

FAQs

We partner exclusively with ISO 9001:2015 certified facilities. Every batch is independently third-party tested by a U.S.-based laboratory before it is approved for release. Each batch is verified for identity (LC-MS), purity (HPLC-UV), net content, and endotoxin (LAL assay, USP <85>). Vials are clearly labeled with the compound and its batch (lot) number, and that number matches the batch-specific Certificate of Analysis published for it. Matching the two confirms the vial you received came from the batch that was tested. Visit our COA library and COA archive to view our public test results.

Yes. Every batch is independently tested by Freedom Diagnostics, a third-party U.S. laboratory, before it is approved for release. Testing covers identity by liquid chromatography and mass spectrometry (LC-MS), purity by high-performance liquid chromatography with UV detection (HPLC-UV), endotoxin by LAL assay (USP <85>), and net content. Certificates of Analysis (COAs) are published for every compound. Search by compound in our COA library, or view the COA archive to find all public test results.

Sealed lyophilized (freeze-dried) vials remain stable for up to 24 months when stored at -20°C. For short-term storage or upon receipt, refrigerate sealed vials at 2°C to 8°C, protected from light and moisture. Always handle and store materials under standard laboratory protocols.

Every order ships in a secure, reusable magnetic case, inside insulated protective packaging. The packaging is designed to maintain compound stability and prevent physical or UV damage during transit, ensuring your research materials arrive safely and securely. Compounds are supplied as a lyophilized powder, most in a 3mL clear glass vial, with select products such as NAD+ and glutathione in larger vials.

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Orders paid in full before 12:00 PM PST on a business day are typically dispatched from our USA facility the same or next business day (within 24 hours). Orders placed after that cutoff, or on a weekend or holiday, are dispatched the next business day. Most orders arrive within 2 to 3 business days, shipped via UPS with USPS on select orders.

You will receive email updates at every stage: order prepared, shipped, out for delivery, and delivered. The shipped email includes your tracking number and estimated delivery date. You can also track anytime from the Orders section of your account, or by entering your order ID and billing email on our Track My Order page. Tracking can take up to one business day to update after your package is handed to the carrier.

Shipping is free on all orders over $199. Orders below that are charged a flat $14.99, shown at checkout before you pay. We ship within the United States and Puerto Rico only, including APO and FPO military addresses, and do not ship internationally.

Our USA-based support team is here to help with orders, shipping, and batch documentation. Most answers are in our Support Center, and if you still need us, you can open a support ticket there or email support@protidehealth.org.

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