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