| Title:  Kebuzone CAS Registry Number:  853-34-9 CAS Name:  4-(3-Oxobutyl)-1,2-diphenyl-3,5-pyrazolidinedione Additional Names:  1,2-diphenyl-4-(g-ketobutyl)-3,5-pyrazolidinedione;  1,2-diphenyl-4-(3¢-oxobutyl)-3,5-dioxopyrazolidine;  ketophenylbutazone;  KPB Trademarks:  Chebutan;  Chepirol;  Chetazolidin (Zeria);  Chetil;  Copirene;  Ketason;  Ketazone (Beytout);  Pecnon (Sanken);  Phloguron (Steiner);  Recheton Molecular Formula:  C19H18N2O3 Molecular Weight:  322.36 Percent Composition:  C 70.79%, H 5.63%, N 8.69%, O 14.89% Literature References:  Prepn:  Deuss et al., US 2910481 (1959 to Geigy).  Review of pharmacology:  Horakova et al., Pharmacotherapeutica 1950-1959, 335-350 (1963), C.A. 60, 6072g (1964).  Metabolism:  Nemecek et al., Arzneim.-Forsch. 16, 1339 (1966); Queisnerova, Nemecek, Cesk. Farm. 20, 55 (1971), C.A. 75, 47077u (1971). Properties:  Crystals, mp 115.5-116.5° or 127.5-128.5° depending on cryst form. Melting point:  mp 115.5-116.5° or 127.5-128.5° depending on cryst form Therap-Cat:  Antirheumatic. Keywords:  Antiarthritic/Antirheumatic.  |