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