6-Amino-4-chloro-2-(trifluoromethoxy)pyridine-3-carboxylic acid
4-Amino-2-(difluoromethyl)-5-iodo-3-(trifluoromethoxy)pyridine
2-Amino-4-chloro-5-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Amino-3-chloro-6-(trifluoromethoxy)pyridine-5-carboxylic acid