3-Amino-2-(chloromethyl)-6-(trifluoromethoxy)pyridine-5-acetic acid
2-Amino-5-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine
6-Amino-2-(chloromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid
2-Amino-6-(chloromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid