2-(Difluoromethyl)-5-methyl-6-nitro-3-(trifluoromethoxy)pyridine
4-(Aminomethyl)-3-methyl-6-nitro-2-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-4-methyl-5-nitro-3-(trifluoromethoxy)pyridine
3-(Aminomethyl)-4-methyl-6-nitro-2-(trifluoromethoxy)pyridine