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