4-Amino-5-(bromomethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid
2-Bromo-3-(bromomethyl)-6-cyano-5-(trifluoromethoxy)pyridine
4-Amino-3-(bromomethyl)-2-(trifluoromethoxy)pyridine-6-acetic acid
4-Amino-6-(bromomethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid