2-Bromo-3-methyl-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Chloro-3-(fluoromethyl)-4-iodo-5-(trifluoromethoxy)pyridine
2-Bromo-3-methyl-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Bromo-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid