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