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