Ethyl 5-chloro-2-cyano-3-(difluoromethyl)pyridine-4-acetate
6-(Aminomethyl)-2-bromo-4-(difluoromethyl)-3-(trifluoromethyl)pyridine
Ethyl 4-chloro-3-cyano-6-(difluoromethyl)pyridine-2-acetate
Ethyl 4-chloro-3-cyano-5-(difluoromethyl)pyridine-2-acetate