4-Cyano-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxaldehyde
5-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Fluoro-4-methyl-5-nitro-3-(trifluoromethoxy)pyridine
4-Cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid