问答题
CH3COCH(CH3)COOC2H5CH3COC(CH3)2COOC2H5
CH3COCH2COOH,HOOCCH2COOH
问答题CH3COCH2COOH,HOOCCH2COOH
乙酰氯,乙酸酐,氯乙烷
问答题乙酰氯,乙酸酐,氯乙烷