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