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