1634-82-8 2-(4-Hydroxybenzeneazo)benzoic acid 2-[(4-Hydroxyphenyl)azo]benzoic acid Benzoic acid, 2-[(4-hydroxyphenyl)azo]- Benzoic acid, o-[(p-hydroxyphenyl)azo]- HABA NSC77376 o-(p-Hydroxyphenylazo)benzoic acid o-[(p-Hydroxyphenyl)azo]-benzoic acid