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