3-Bromo-4-chloro-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Amino-3-(chloromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Bromo-2-fluoro-4-iodo-6-(trifluoromethoxy)pyridine
4-Amino-2-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylic acid