3-Methoxy-N-hydroxy-4-aminoazobenzene hydrochloride 64042-13-3 78265-95-9 BENZENAMINE, N-HYDROXY-2-METHOXY-4-(PHENYLAZO)-, MONOHYDROCHLORIDE Hydroxylamine, N-(2-methoxy-4-(phenylazo)phenyl)-, hydrochloride N-Hydroxy-3-methoxy-4-aminoazobenzene hydrochloride