(4-Aminophenyl)phosphonic acid (p-Aminophenyl)phosphonic acid 4-16-00-01128 (Beilstein Handbook Reference) 4-Phosphonoaniline 5337-17-7 AI3-22255 BRN 0388231 EINECS 226-260-7 NSC 417 NSC 55744 Phosphanilic acid Phosphonic acid, (4-aminophenyl)- (9CI) Phosphonic acid, (p-aminophenyl)- p-Phosphonoaniline