4-Bromo-3-(chloromethyl)-2-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Bromo-2-(difluoromethyl)-6-methyl-4-(trifluoromethoxy)pyridine
6-Bromo-3-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Bromo-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid