24428-85-1 3-Methyl-4-(2-(p-nitrobenzoyl)vinyl)-1-phenyl-3-pyrazolin-5-one 3-Pyrazolin-5-one, 3-methyl-4-(2-(p-nitrobenzoyl)vinyl)-1-phenyl- 5-24-08-00281 (Beilstein Handbook Reference) BRN 0842734