Methyl 4-amino-3-(chloromethyl)-2-(difluoromethyl)pyridine-5-carboxylate
4-Amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
Ethyl 6-amino-4-(chloromethyl)-2-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2-amino-4-(chloromethyl)-5-(difluoromethyl)pyridine-3-carboxylate