Ethyl 4-(chloromethyl)-6-cyano-2-(difluoromethyl)pyridine-3-acetate
3-(Chloromethyl)-2-cyano-4-(difluoromethyl)pyridine-6-acetic acid
Methyl 4-(aminomethyl)-3-cyano-6-(difluoromethyl)pyridine-2-acetate
2-(Chloromethyl)-4-cyano-6-(difluoromethyl)pyridine-3-acetic acid