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