3-(Difluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-6-acetonitrile
Methyl 3-hydroxy-6-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 5-(difluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 4-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-3-acetate