2-Amino-4-(bromomethyl)-3-(difluoromethyl)pyridine-6-acetic acid
2-Amino-3-(aminomethyl)-4-(difluoromethyl)-5-nitropyridine
2-Amino-5-(bromomethyl)-4-(difluoromethyl)pyridine-3-acetic acid
6-Amino-4-(bromomethyl)-2-(difluoromethyl)pyridine-3-acetic acid