974-23-2
16,17-alpha环氧孕烯醇酮
→
21853-84-9
(3β,16β)-20-Oxo-16,17-epoxypregn-5-ene-3,21-diyl diacetate
98149-19-0
34209-81-9
16,17-环氧孕烯醇酮醋酸酯
108-24-7
乙酸酐