2,3-Dimethyl-1-phenyl-4-(salicylideneamino)-3-pyrazolin-5-one 3-Pyrazolin-5-one, 2,3-dimethyl-1-phenyl-4-(salicylideneamino)- 30957-66-5 4-(Salicylideneamino)antipyrine 5-25-14-00098 (Beilstein Handbook Reference) BRN 0308527