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