Most compounds in the Vantage Aminos catalog carry a batch-specific certificate of analysis with HPLC and mass-spectrometry results. A small number do not, and those product pages say so rather than offering a document we cannot send.
Tell us which compound you are looking at and we will send the certificate for the lot you would actually receive, usually within one business day. If that lot has not been certified yet, we will tell you that rather than sending a document for a different lot.