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