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
4-Amino-6-(fluoromethyl)-3-iodo-2-(trifluoromethoxy)pyridine