Ethyl 2-amino-3-(difluoromethyl)-6-methoxypyridine-5-carboxylate
2-Amino-3-(difluoromethyl)-6-fluoropyridine-4-carboxaldehyde
Ethyl 2-amino-3-(difluoromethyl)-5-methoxypyridine-4-carboxylate
2-Amino-3-(difluoromethyl)-4-fluoropyridine-6-carboxaldehyde