2,3-Dimethyl-1-(p-(difluoromethylsulfonyl)phenyl)-3-pyrozolin-5-one 3-Pyrazolin-5-one, 2,3-dimethyl-1-(p-(difluoromethylsulfonyl)phenyl)- 5-24-01-00338 (Beilstein Handbook Reference) 62128-99-8 BRN 0692372