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