2-Bromo-4-(bromomethyl)-3-cyano-6-(trifluoromethoxy)pyridine
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