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