49. Identify compound Y.
(A) 2-bromobutane
(B) meso-2,3-dibromobutane
(C) 2,3-dibromo-2-butene
(D) racemic (2R,3R) and (2S,3S)-2,3-dibromobutane
(A) 2-bromobutane
(B) meso-2,3-dibromobutane
(C) 2,3-dibromo-2-butene
(D) racemic (2R,3R) and (2S,3S)-2,3-dibromobutane
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統計: A(1), B(34), C(15), D(127), E(0) #923032
統計: A(1), B(34), C(15), D(127), E(0) #923032