Identity first
Identity confirmation asks whether the material matches the labeled research compound — typically through orthogonal analytical methods such as infrared spectroscopy, chromatography retention behavior, and/or mass spectrometry, depending on what the certificate for that lot reports. We do not invent method names for marketing; published certificates list the methods actually used.
Catalog pages carry molecular formula, molecular weight, sequence, or composition when those fields apply. Those reference attributes help researchers cross-check PubChem or literature identity, but the lot certificate remains the authoritative file for the material you receive.
Purity next
Purity figures on a certificate of analysis (COA) describe that lot under the stated methods — often chromatographic area percent for peptides. A high purity number is useful for assay design; it is not a warranty of biological activity in your specific model. Always read the COA note for the vial size and lot covered by the PDF.
When a certificate is published, we surface purity and named methods on the product page and keep the PDF downloadable from the certificates page. Lots without a published file can still be requested by email with the compound and lot reference.
Partners and continuity
Manufacturing and analytical support is coordinated with named partners. Third-party or partner lab names appear on certificates when they issued the report. Lot continuity matters for multi-timepoint studies: reorders should be compared against the prior COA rather than assumed identical.
If your protocol requires a specific purity floor, test method, or endotoxin specification beyond what a published COA shows, write us before ordering so we can confirm whether that lot documentation exists.
What to file with your protocol
Download or request the COA, record the lot number on the vial and in the notebook, and keep the PDF with the study records. That habit is how laboratories defend identity claims months later — not screenshots of a product page alone.