The molecule is a pyrazolidine that is phenylbutazone in which the two methylene hydrogens at postion 3 on the butyl chain are replaced by an oxo group. It has a role as a non-steroidal anti-inflammatory drug and a non-narcotic analgesic. It is a member of pyrazolidines and a methyl ketone. It derives from a phenylbutazone.
4-(3-oxobutyl)-1,2-diphenylpyrazolidine-3,5-dione