42.(-)-Ephedrine與(-)-pseudoephedrine在結構上的差異稱為:
(A)enantiomer
(B)diastereomer
(C)bioisostere
(D)tautomer
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統計: A(412), B(2154), C(185), D(62), E(0) #3381363
統計: A(412), B(2154), C(185), D(62), E(0) #3381363