1,2-Diphenyl-3,5-dioxo-4-(3-hydroxybutyl)pyrazolidine 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(3-hydroxybutyl)- 3,5-Pyrazolidinedione, 4-(3-hydroxybutyl)-1,2-diphenyl- (9CI) 4-(3-Hydroxybutyl)-1,2-diphenyl-3,5-pyrazolidinedione 4-25-00-00265 (Beilstein Handbook Reference) 568-76-3 BM 11 BRN 0309214 G 28231 gamma-Hydroxyphenylbutazone