甲酸酯类：HCOOCH2CH2CH2CH3,HCOOCH(CH3)CH2CH3,HCOOCH2CH(CH3)2,HCOOC(CH3)3乙酸酯类：CH3COOCH2CH2CH3,CH3COOCH(CH3)2丙酸酯类：CH3CH2COOCH2CH3丁酸酯类：CH3CH2CH2COOCH3,(CH3)2CHCOOCH3
