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