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