CAS No. 4735-65-3 Cat. No. BCP46968 Name Betamethasone Impurity 20 Synonyms 9-Bromo-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione-21-acetate; SMILES Chemical Name Formula C24H31BrO6 M. Wt 495.41 Purity 98% Storage Store at 4-8°C
CAS No. 15423-80-0 Cat. No. BCP46967 Name Clobetasol Propionate EP Impurity I Synonyms Betamethasone 17-Propionate 21-Mesylate; SMILES CCC(=O)OC1(C(CC2C1(CC(C3(C2CCC4=CC(=O)C=CC43C)F)O)C)C)C(=O)COS(=O)(=O)C Chemical Name Formula C26H35FO8S M. Wt 526.61 Purity 98% Storage Store at 4-8°C Description Betamethasone 17-Propionate 21-Mesylate is the 21-mesylate analogue of Betamethasone 17-Acetate.