2-(Difluoromethyl)-4-methyl-6-nitro-3-(trifluoromethyl)pyridine
2-(Difluoromethyl)-4-methyl-3-nitro-5-(trifluoromethyl)pyridine
2-(Difluoromethyl)-3-methyl-6-nitro-4-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-methyl-5-nitropyridine-4-carbonyl chloride