Chemical Source Comparison

MyChem.info aggregates chemical records from multiple data sources. Bio Tooltips presents a curated tooltip view instead of exposing every raw field by default.

Data source	Typical use
PubChem	structures, names, formulae, CIDs
ChEMBL	bioactivity, targets, molecule IDs
ChEBI	ontology identifiers and classifications
DrugBank	drug identifiers, pharmacology, product context
UNII	substance identifiers

Use sourcePaths: true while developing chemical tooltip sections to inspect which MyChem paths contributed rendered fields.