4-Bromo-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylic acid
6-Bromo-2-methyl-4-(trifluoromethoxy)pyridine-3-carboxylic acid
6-Chloro-4-(chloromethyl)-3-cyano-2-(trifluoromethoxy)pyridine
3-Bromo-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid