The formula field on an Analyte is a reference value that can appear in detailed chemical summary pages and regulatory appendices. It is informational rather than computational — piper does not perform molecular-weight calculations from it. Hydrogeologists and chemists use the formula to verify that the correct chemical was imported and to cross-check identities when two analytes share a common name but differ in structure.
Technical section
Data model, API, and internals — visible to developers.