4-(Bromomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylic acid
4-(Bromomethyl)-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylic acid
6-(Bromomethyl)-4-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylic acid
4-(Bromomethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylic acid