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