24428-84-0 3-Pyrazolin-5-one, 4-(2-(p-chlorobenzoyl)vinyl)-3-methyl-1-phenyl- 4-(2-(p-Chlorobenzoyl)vinyl)-3-methyl-1-phenyl-3-pyrazolin-5-one 5-24-08-00281 (Beilstein Handbook Reference) BRN 0825091