4-Bromo-2-cyano-3-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Amino-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetic acid
3-Amino-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetic acid
3-Bromo-5-cyano-6-(trifluoromethoxy)pyridine-2-carboxylic acid