4-(4-硝基苯基偶氮)酚;4-羟基-4'-硝基偶氮苯
4-(4-NITROPHENYLAZO)PHENOL
4-[(4-nitrophenyl)azo]-pheno;Phenol, 4-[(4-nitrophenyl)azo]-;4-HYDROXY-4'-NITROAZOBENZENE;4-(4-NITROPHENYLAZO)PHENOL;Nitrophenylazophenol;4-(4-Hydroxyphenylazo)-1-nitrobenzene;4'-Nitro-4-hydroxyazobenzene;4'-Nitroazobenzen-4-ol