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