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