Research peptides,
verified batch by batch.
Lyophilized compounds with a third-party certificate of analysis for every lot. Ships in 24h from Austin, cold-packed.
CoA on every batch
HPLC + mass spec, downloadable
Ships in 24h
Free US shipping over $200
Cold-chain packed
Insulated, ice-packed boxes
99%+ purity
Independent US & EU labs
Most ordered this month
Best sellers
Transparency first
Check purity before you order, not after.
Every product page lists its current and previous batches with the testing lab, date and HPLC purity. Download the PDF certificate in one click.
See a certificate
HX201-2610A · Janoshik Analytical
99.3% HPLC purity
What labs say
★★★★★
“CoAs match our own in-house HPLC within 0.3%. Shipping to Boston was overnight and still cold.”
Dr. R. Alvarez
Cell biology lab, MA
★★★★★
“Paying by bank transfer for our purchasing department was painless. Invoices come out clean.”
K. Thompson
Lab manager, NC
★★★★★
“Good selection and fast support. One vial arrived with a cracked cap, replaced within two days.”
J. Park
Independent researcher, CA