2588-24-1 3,3'-(3H-2,1-Benzooxathiol-3-ylidene)bis(6-hydroxy-5-methylbenzoicacid) S,S-dioxide Benzoic acid, 3,3'-(3H-2,1-benzoxathiol-3-ylidene)bis(6-hydroxy-5-methyl-, S,S-dioxide EINECS 219-972-4