試題詳解

13. The C7 compound which gives 3 signals in the broadband proton-decoupled 13C spectrum could be:
(A) Heptane
(B) 2-Methylhexane
(C) 3,3-Dimethylpentane
(D) 2,4-Dimethylpentane
(E) 2,2,3-Trimethylbutane