If the case file contains a traceability document, you may identify the certificate of analysis utilizing the applicable vendor’s website:

Biorad:  https://www.bio-rad.com/en-us/life-science-research/support/certificate-of-analysis?ID=KVY63TKG4

Cayman:  https://www.caymanchem.com/

Cerilliant:  http://www.cerilliant.com/

Cliniqa: https://www.cliniqa.com/Support/Documents.aspx

Lipomed:  https://www.lipomed-usa.com/en

Restek:  https://www.restek.com/en/tools-and-calculators/tools/documentation-search/