Methyl 2-(aminomethyl)-6-(difluoromethyl)-3-methylpyridine-5-acetate
Methyl 2-(aminomethyl)-6-(difluoromethyl)-3-methylpyridine-4-acetate
Methyl 2-(aminomethyl)-5-(difluoromethyl)-6-methylpyridine-3-acetate
Methyl 6-(aminomethyl)-3-(difluoromethyl)-2-methylpyridine-4-acetate