Batch or lot number
The batch or lot number connects a document to one production quantity. A certificate for a different batch does not describe the vial you have, even when the compound name matches.
If the number on the vial and the number on the document differ, the document is not verification for that vial.
Analytical methods and results
The certificate should name the methods that were used, such as HPLC for chromatographic purity or mass spectrometry for a mass that supports identity. The result belongs to the method named, not to every possible test.
A purity result and an identity result answer different questions. One can be present without the other. Water content, residual solvents, counterions, and microbial or endotoxin tests appear only when those tests were actually run.
Laboratory and date
A laboratory name and a report date identify who recorded the result and when. A name on a page is not, by itself, proof of accreditation. Accreditation is a separate record.
An undated page, or a page that does not identify the laboratory, leaves out information a reader needs in order to judge the document.
What the document does not do
A certificate does not set a clinical dose, prove sterility unless that test is the one reported, or establish that a material is approved for human or veterinary administration.
BioCore Central shows a certificate on the verification page only when an authentic record is on file. None are published at present. A lookup that does not match a record says that documentation is not currently available.