CH3 H3C—CH=C-CH2-CH3 ·CH2-CH3./ ●CH3 m/z=55 CH3 CH3 H3C—CH=C+ H3C—CH—C=CH2 m/z=69 100 41 90 80 69 55 84() 3 27 20- 1 0 102030405060708090100110 上页下页 返回 84(M ) 0 10 20 30 40 50 60 70 80 90 100 110 69 55 41 27 10 0 80 90 100 60 50 30 20 40 70 % OF BASE PEAK H3C CH C CH3 CH2 CH3 H3C CH C CH3 H3C CH C CH3 CH2 CH2 CH3 CH3 m/z=69 m/z=55