3-(Difluoromethyl)-6-methyl-2-nitro-5-(trifluoromethyl)pyridine
5-(Difluoromethyl)-2-methyl-4-nitro-3-(trifluoromethyl)pyridine
5-(Difluoromethyl)-2-methyl-3-nitro-4-(trifluoromethyl)pyridine
Ethyl 4-(difluoromethyl)-3-methoxy-5-nitropyridine-2-carboxylate