3-Cyano-5-methyl-4-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Chloro-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Cyano-6-methyl-2-(trifluoromethoxy)pyridine-4-sulfonamide
5-Chloro-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid