CAS: 490-79-9 Molecular Formula: C7H6O4 Molecular Weight (g/mol): 154.121 MDL Number: MFCD00002460 InChI Key: WXTMDXOMEHJXQO-UHFFFAOYSA-N Synonym: gentisic acid,hydroquinonecarboxylic acid,benzoic acid, 2,5-dihydroxy,5-hydroxysalicylic acid,gensigen,gensigon,gentisate,2,5-dioxybenzoic acid,2,5-dhba,gentisinic acid PubChem CID: 3469 ChEBI: CHEBI:17189 IUPAC Name: 2,5-dihydroxybenzoic acid SMILES: C1=CC(=C(C=C1O)C(=O)O)O