Pepta Labs is a United States-based reseller of lyophilized research peptides. The catalog lists 35 compounds, sealed at the nominal quantity on the label and as lyophilized powder in vials for the peptides, sold as chemical reference materials for laboratory research use only. Every product page states the CAS number, molecular formula, molecular weight and, for peptides, the amino-acid sequence, together with the reported HPLC purity for that listing. The independent HPLC purity and mass-spectrometry identity report for any listing is sent by email on request, before you order if you want to see it first. Listings are grouped into structural classes, and each class page describes the chemistry its members share.
Frequently asked questions
Which research peptides are for sale at Pepta Labs?
The catalog currently lists 35 compounds, grouped into the structural classes linked on this page. Each is supplied sealed at the nominal quantity printed on the label, as lyophilized powder in a vial for the peptide listings. Each product page states the CAS number, molecular formula and molecular weight, the amino-acid sequence where the entry is a peptide, and the reported HPLC purity for that listing.
Are Pepta Labs research peptides lab tested, and do they come with a COA?
The testing represented is independent third-party HPLC purity analysis and mass-spectrometry identity confirmation, commissioned through the purchasing group on a sampled production run from the source; Pepta Labs does not test in-house. The reported HPLC purity is published on each product page. Sterility, endotoxin or LAL, potency, pharmaceutical-grade, cGMP, contaminant-panel and vial fill-quantity testing are not claimed. Reading the report field by field is covered in how to read and verify a peptide COA.
Where can I buy research peptides in the US?
From this catalog. Pepta Labs LLC is a United States-based online reseller of lyophilized research peptides, not a manufacturer, production facility or testing laboratory, and orders are accepted only for delivery to United States addresses. Compounds ship as sealed lyophilized powder at ambient temperature without cold packs or insulated packaging. Orders are placed from a registered account with a confirmed email and an electronic research-use certification, and buyers must be 21 or older.
What does a Pepta Labs listing state about each compound?
Every compound is sold as a chemical reference material for laboratory research and is not for human or animal use. Product information is limited to commercial and chemical facts: compound name, supplier-stated nominal quantity, CAS number, molecular formula, molecular weight, sequence where applicable, physical form, reported HPLC purity, price and dry-storage information. Buyers certify research-only use at checkout. Current United States status is set out in the legal status guide, and what are research peptides explains how they are made, documented, bought and checked.
Which research peptides are the most popular in 2026?
Pepta Labs publishes no sales ranking or popularity list. Some catalog entries are flagged as featured; that view is read from the live product table and changes as the flags are updated, so it is a convenience view rather than a fixed list, and the full catalog on this page and the per-family category pages remain the canonical listings.