問題詳情

28. Bextra, a COX-2 inhibitor used in the treatment of arthritis, contains a heterocyclic ring. What is this heterocyclic ringnamed? 
(A) furan ring
(B) oxazole ring
(C) isoxazole ring
(D) thiophene ring
(E) indole ring

參考答案

答案:C
難度:適中0.4
統計:A(1),B(1),C(2),D(0),E(0)

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