問題詳情
64.口服有效之雌性素ethinyl estradiol，結構上的乙炔基位於第幾位碳上？
(A)16 α
(B)16 β
(C)17 α
(D)17 β
(A)16 α
(B)16 β
(C)17 α
(D)17 β
參考答案
答案：C
難度：適中0.532005
統計：A(167),B(220),C(1255),D(717),E(0)
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