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