294193-58-1

4-(4-cyanoanilino)-4-oxo-2-butenoic acid 4-[(4-cyanophenyl)amino]-4-oxo-2-butenoic acid 2-Butenoic acid, 4-[(4-cyanophenyl)amino]-4-oxo- (E)-4-((4-cyanophenyl)amino)-4-oxobut-2-enoic acid (2E)-4-[(4-cyanophenyl)amino]-4-oxobut-2-enoic acid