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