莽草酸可用于合成药物达菲,其结构简式如图,下列关于莽草酸的说法

莽草酸可用于合成药物达菲,其结构简式如图,下列关于莽草酸的说法正确的是

A.分子式为C7H6O5

B.分子中含有2种官能团

C.可发生加成和取代反应

D.在水溶液中羧基和羟基均能电离出H+

答案

C

  

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