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