Methyl 3-amino-4-(difluoromethyl)-6-methoxypyridine-2-carboxylate
Methyl 2-amino-3-(difluoromethyl)-6-fluoropyridine-5-carboxylate
3-Amino-2-(difluoromethyl)-6-fluoropyridine-4-acetonitrile
Methyl 2-amino-3-(difluoromethyl)-5-fluoropyridine-4-carboxylate