問題詳情

69.Coumarin為下列何者形成之內酯(lactone)?
(A)o-hydroxycinnamic acid
(B)m-hydroxycinnamic acid
(C)p-hydroxycinnamic acid
(D)4-hydroxybutanoic acid

參考答案

答案:A
難度:適中0.578397
統計:A(830),B(97),C(428),D(80),E(0)

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