5-Bromo-3-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Bromo-5-(chloromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Bromo-3-methoxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Bromo-3-methoxy-4-(trifluoromethoxy)pyridine-6-carboxylic acid