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