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