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