31748-47-7

2-(4-hydroxy-[1]naphthylazo)-3,5-dinitro-benzenesulfonic acid 2-[(4-hydroxy-1-naphthyl)azo]-3,5-dinitrobenzenesulphonic acid 2-[(4-Hydroxynaphthalen-1-yl)azo]-3,5-dinitrobenzenesulfonic acid Benzenesulfonic acid, 2-[2-(4-hydroxy-1-naphthalenyl)diazenyl]-3,5-dinitro-