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