甲醇

3-溴-5-甲基异噁唑-4-羧酸

3-溴-5-甲基异噁唑-4-羧酸甲酯

ethyl 3-chloro-5-methylisoxazole-4-carboxylate

3-氯-5-甲基-4-异噁唑羧酸