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