6-Cyano-3-hydroxy-2-methyl-4-(trifluoromethoxy)pyridine
6-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
Methyl 3-cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetate
2-Cyano-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-acetic acid