3-(Difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-2-methanol
3-(Difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-6-methanol
2-(Difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine-6-methanol
Methyl 4-methyl-2-nitro-5-(trifluoromethoxy)pyridine-3-acetate