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