4-Amino-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2,3-Diiodo-4-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Amino-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylic acid
6-Amino-3-bromo-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine