5-Cyano-2-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine
3-(Aminomethyl)-5-cyano-2-methyl-6-(trifluoromethoxy)pyridine
4-Cyano-5-(difluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine
4-Cyano-3-(difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine