(乙酰氨基)[(3-甲氧基-5-甲基-4-异恶唑基)甲基]丙二酸二乙酯

3-methoxy-4-hydroxymethyl-5-methylisoxazole

4-(氯甲基)-3-甲氧基-5-甲基-1,2-恶唑

3-methoxy-5-methyl-1,2-oxazole-4-carboxylic acid

3-溴-5-甲基异噁唑-4-羧酸