4'-Hydroxyaminoazobenzene 6530-27-4 78172-53-9 BRN 1842271 Benzenamine, N-hydroxy-4-(phenylazo)- (9CI) CCRIS 1066 Hydroxylamine, N-(p-(phenylazo)phenyl)- N-(p-(Phenylazo)phenyl)hydroxylamine N-Hydroxy-4-(phenylazo)benzenamine N-Hydroxy-4-aminoazobenzene