| Physical and Chemical Properties | Chemical properties crystallization. |
| Use | Uses an intermediate of skin-lightening acetate. |
16 α,17 α-epoxide -11 α-hydroxyprogesterone -4-ene -3 can be used, 20-diketone is sulfonylated and eliminated by (11 α-hydroxy) [forming 9(11)-double bond], (epoxy group is hydrogen bromide) ring opening and debromination (forming 17 α-hydroxy group), (21-position) iodide, (iodine atom is replaced by acetoxy), (17-hydroxy) acetylation, [9(11)-position double bond hypobromic acid] addition and other steps.