Similar names: 3,5-Pyrazolidinedione, 4-butyl-1-(p-hydroxyphenyl)-2-phenyl- (6CI,7CI,8CI); 4-Butyl-1-(4-hydroxyphenyl)-2-phenyl-3,5-pyrazolidinedione; 1-(p-Hydroxyphenyl)-2-phenyl-4-butyl-3,5-pyrazolidinedione; 1-Phenyl-2-(p-hydroxyphenyl)-3,5-dioxo-4-butylpyrazolidine; 1-Phenyl-2-(p-hydroxyphenyl)-3,5-dioxo-4-n-butylpyrazolidine; 1-p-Hydroxyphenyl-2-phenyl-3,5-dioxo-4-n-butylpyrazolidine; 4-Butyl-2-(4-hydroxyphenyl)-1-phenyl-3,5-dioxopyrazolidine; 4-Butyl-2-(p-hydroxyphenyl)-1-phenyl-3,4-pyrazolidinedione; 4-Butyl-2-(p-hydroxyphenyl)-1-phenyl-3,5-pyrazolidinedione; Butapirone; Californit; Crovaril; Flamaril; Floghene; Flogitolo; Flogoril; Frabel; G 27202; Metabolite I; NSC 526053; Neo-Farmadol; Offitril; Oxalid; Oxazolidin; Oxyphenbutazone; Oxyphenobutazone; Oxyphenylbutazone; Rapostan; Ro 04-4410; Romaxin; Suganril; Tandacote; Tandearil; Tanderil; Telidal; Tendearil; Visubutina; p-Hydroxyphenylbutazone; p-Oxyphenylbutazone