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