43 57 CHz-CHz-CH3 71 29 72 100() 2030405060708090100 m/Z 6 HgC-H2C-C-c H2-CH2-CH3 -[CHzCHzCH3] -[H3C-H2C] Hcno CH2 CHz CH m/z=71(48%) 上页 下页 返回20 30 40 50 60 70 80 90 100 43 57 m/z 100(M ) 71 29 72 H2C C CH2 O H3C CH2 CH3 H2C C O H3C [CH2 CH2 CH3 - ] m/z=57(75%) C CH2 O CH2 CH3 [H H2C] - 3C m/z=71(48%) H2C C CH2 O H3C CH2 CH3