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)