Methyl 4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-6-carboxylate
2-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-6-acetic acid
6-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-carbonyl chloride
Methyl 3-(difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxylate