Synonyms: Pregna-1,4-diene-3,20-dione,9,11b-dichloro-17,21-dihydroxy-16a-methyl-, dibutyrate (8CI); 9,11b-Dichloro-17,21-dihydroxy-16a-methylpregna-1,4-diene-3,20-dione17,21-di(butyrate); Butyric acid, diester with 9,11b-dichloro-17,21-dihydroxy-16a-methylpregna-1,4-diene-3,20-dione;Meclorisone dibutyrate; Sch 11572; Schering No. 11572