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