Ioxynil acid, 4-carboxy-2,6-di-iodophenol, EINECS 210-562-0, Benzoic acid,4-hydroxy-3,5-diiodo, 4-Hydroxy-3,5-dijod-benzoesaeure, Benzoic acid, 4-hydroxy-3,5-diiodo-, p-hydroxy-3,5-diiodobenzoic acid, 4-hydroxy-3,5-diiodo-benzoic acid, 3,5-Diiod-4-hydroxy-benzoesaeure, 3,5-Diiodo-4-hydroxybenzoic acid