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