3,5-Bis(trifluoromethyl)-2-(trifluoromethoxy)pyridine
2,6-Bis(trifluoromethyl)-4-(trifluoromethoxy)pyridine
5-Fluoro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxylic acid
3-Fluoro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylic acid