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