3-Chloro-1,2-diphenyl-3-pyrazolin-5-one 3-Chloro-1,2-diphenyl-5-pyrazolone 3-Pyrazolin-5-one, 3-chloro-1,2-diphenyl- 37585-37-8 3H-Pyrazol-3-one, 5-chloro-1,2-dihydro-1,2-diphenyl- (9CI) 5-24-01-00296 (Beilstein Handbook Reference) 5-Chloro-1,2-dihydro-1,2-diphenyl-3H-pyrazol-3-one BRN 0656855