45 73 29 27 59 87 102(” 2030405060708090100110m/z 十● H3C-H2C-HC-O-CH2-CH3 CH3 CH3 ●CH3 ●CH2 十 HC=O-CH2-CH3 H3C-H2C-HC-O=CH2 CH3 1 m/z=73 m/z=87 CH3 上页 下页 返回20 30 40 50 60 70 80 90 100 29 45 110 m/z 27 73 59 87 102(M ) H2C HC O CH2 CH3 CH3 H3C CH3 HC O CH2 CH3 CH3 CH2 CH3 H2C HC O CH2 CH3 H3C m/z=73 m/z=87