Methyl 2-amino-5-(difluoromethyl)-3-fluoropyridine-6-carboxylate
Methyl 2-amino-4-(difluoromethyl)-6-fluoropyridine-3-carboxylate
3-Amino-5-(difluoromethyl)-2-fluoropyridine-4-carboxylic acid
Ethyl 5-amino-4-(difluoromethyl)-2-methoxypyridine-3-acetate