2,5-Dihydroxybenzoic acid 2,5-Dioxybenzoic acid 490-79-9 5-Hydroxysalicylic acid Benzoic acid, 2,5-dihydroxy- Gensigen Gensigon Gentisate Gentisic acid Hydroquinonecarboxylic acid NSC27224 Salicylic acid, 5-hydroxy- WLN: QVR BQ EQ