方法：以5 氯2 羟基苯甲酸甲酯为原料，经硝化、还原等九步反应合成。

METHOD: It was synthesized from methyl 5-chloro-2-hydroxyl benzoic acid via nine-step reaction with nitration, reduction, etc.

youdao

方法：以5 氯2 羟基苯甲酸甲酯为原料，经硝化、还原等九步反应合成。

METHOD: It was synthesized from methyl 5-chloro-2-hydroxyl benzoic acid via nine-step reaction with nitration, reduction, etc.

youdao