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