2-Butenoic acid, 4-oxo-4-(phenylamino)-, (Z)- (9CI) 4-Oxo-4-(phenylamino)isocrotonic acid 555-59-9 AI3-03599 EINECS 209-102-1 Maleamic acid, N-phenyl- Maleanilic acid Maleanilic acid (8CI) Maleanilinic acid Maleic acid anilide Maleic acid monoanilide N-Phenylmaleamic acid NSC 5333