5-甲基苯并[d]噁唑-2-羧酸

5-nitro-1,3-benzoxazole-2-carboxylic acid

2,2,3-三甲基丁酸

4-Bromo-1-methyl-3-(trifluoromethyl)-1H-pyrazole-5-carboxylic aci d

4-bromo-1-phenyl-5-(trifluoromethyl)pyrazole-3-carboxylic acid