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