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