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