Frequently asked questions

Every batch is tested using High-Performance Liquid Chromatography by an independent third-party lab. ≥99% means the chromatogram shows no detectable impurities above 1% of the active compound. The full chromatogram and methodology are published per-batch in our COA Library.

Visit the COA Library and search by lot number (printed on the vial label). Each entry shows the chromatogram, mass-spec confirmation, water content and storage handling notes for that specific batch.

All peptides on the catalog are synthetic — produced via solid-phase peptide synthesis (SPPS) and lyophilized for stability.

Lyophilized vials are stable for 30+ days at -20 °C from the date of testing. Once reconstituted with bacteriostatic water, store between 2–8 °C and use within 30 days.

Yes. Email cs@chembiosynth.co with your peptide of interest, scale and timeline. Minimum custom order is typically 100 mg.

US orders ship within one business day and arrive in 2–3 business days via tracked express. Free shipping on orders over $200.

We currently ship to the US only. International expansion is on our roadmap — sign up for our research bulletin to be notified.

Yes — plain padded mailer with no product branding on the outside. Inside, vials are protected with insulated liners and shock-absorbing wrap.

You’ll receive a tracking number by email as soon as your order leaves our facility. You can also check status under My Account → Orders.

Major credit and debit cards (Visa / Mastercard / American Express / Discover), PayPal, and PayPal Pay-in-4 for installments.

Subscribe to our research bulletin via the form at the bottom of any page. You’ll receive a unique 10%-off code in your inbox immediately. Single use, valid for 30 days.

Single-use coupons (like the welcome code) cannot be combined with other promotional codes. Site-wide promotions and free-shipping thresholds always apply automatically.

Yes — for orders over $1,000 or recurring lab procurement. Email cs@chembiosynth.co with your lab affiliation and typical volume.

Our welcome codes expire 30 days from issue. If yours has expired, email customer service and we’ll usually issue a fresh code as a one-time courtesy.

Our peptides are sold strictly for laboratory research — receptor-binding studies, in-vitro assays, peer-reviewed bioscience work. They are not approved by the FDA and are not intended for human or animal consumption.

Our manufacturing partners follow GMP-aligned practices but the products themselves are sold as research-grade reagents, not as pharmaceuticals or food products.

Yes. We encourage proper citation of the lot number and our COA when publishing results. Email us if you’d like the formal MSDS/methodology pack for your manuscript.

Yes. MSDS sheets are available on request — email cs@chembiosynth.co with the product name and lot number.

We can’t advise on specific protocols, but our Lab Process page documents how every batch is qualified before it reaches you, and our COA Library shows the kind of analytical data you’ll receive.