3744-50-1 9A,11B-DICHLORO-21-HYDROXY-16A,17A-(ISOPROPYLIDENEDIOXY)-1,4-PREGNADIENE-3,20-DI Pregna-1,4-diene-3,20-dione, 9,11beta-dichloro-16alpha,16,21-trihydroxy-, cyclic 16,17-acetal Pregna-1,4-diene-3,20-dione, 9-alpha,11-beta-dichloro-16-alpha,17-alpha-isopropylidenedioxy-21-hydroxy-