In research, a compound is only as reliable as the documentation behind it. The single most important document is the Certificate of Analysis (COA) — and the most meaningful COA is one produced by independent High-Performance Liquid Chromatography (HPLC) testing. This is the standard every G13 batch is held to before release.
What HPLC measures
HPLC separates the components of a sample by passing it through a column under high pressure. Each component elutes at a characteristic time, producing a chromatogram. From that chromatogram, an analyst can determine two things that matter most for research reference material:
- Identity — is the compound what the label says it is?
- Purity — what percentage of the sample is the target compound, versus related substances or impurities?
For research to be reproducible, both must be known. An unverified compound introduces a variable you cannot control or report.
What a COA documents
A complete COA records the compound name, the lot number, the assay result (purity), the analytical method, the analysis date, and the production standard. G13 publishes all of this openly — you can verify any batch in the COA Portal by lot number, with no login.
What a COA cannot tell you
A COA confirms identity and purity at the time of testing. It is not a statement about suitability for any application, and it never speaks to human use — all G13 compounds are research reference materials for laboratory research use only. Proper storage and handling after delivery remain the researcher's responsibility.
The takeaway is simple: insist on a published, lot-matched, independent HPLC COA. If a supplier cannot show you one, you are taking their word for it — and in research, word is not data.