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