Methyl 5-(aminomethyl)-2-cyano-3-(difluoromethyl)pyridine-6-carboxylate
Methyl 4-(aminomethyl)-2-cyano-6-(difluoromethyl)pyridine-3-carboxylate
2-(Chloromethyl)-3-cyano-5-(difluoromethyl)pyridine-4-acetic acid
Ethyl 3-(chloromethyl)-2-cyano-5-(difluoromethyl)pyridine-4-carboxylate