Ethyl 5-cyano-4-hydroxy-2-(trifluoromethoxy)pyridine-3-acetate
2-Cyano-5-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine
Ethyl 6-cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate
3-Cyano-6-(fluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine