分子式:CH4,C2H4,C2H2,C7H8,C6H6,C2H4O2,CH2O2,CH2O,C2H4O,CH3Cl 结构简式:CH4,CH2=CH2,CH≡CH,----,----,CH3COOH,HCOOH,HCHO,CH3CHO,CH3Cl