14328-46-2
→
2137-18-0
孕诺酮
111979-17-0
16α,17-epoxy-3-methoxy-19-nor-pregna-1,3,5(10)-trien-20-one
67519-64-6
16α,17α-epoxy-17-acetyl-Δ1,3,5(10)-estratriene
101766-63-6
1624-58-4
14339-99-2