2-Fluoro-6-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Fluoro-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Difluoromethyl)-5-hydroxy-2-methyl-4-(trifluoromethoxy)pyridine
2-Fluoro-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid