for the following products
16-alpha Methyl epoxide | 8-DM | 8-DM Acetate | Dexamethasone 9,11-Epoxide | Dexamethasone EP Impurity D | Pregen-1,4-dien-9,11-epoxide-16alpha-methyl-17alpha-21-dihydroxyl-3,20-dione and 9beta,11beta-Epoxy-17,21-dihydroxy-16a-methylpregna-1,4-diene-3,20-dione