Synonyms: Benzoic acid,3,3'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[6-hydroxy-5-methyl-,trisodium salt (9CI);Benzoic acid,3,3'-(3H-2,1-benzoxathiol-3-ylidene)bis[6-hydroxy-5-methyl-, S,S-dioxide,trisodium salt;C.I. Mordant Blue 3 (7CI);C.I. Mordant Blue 3, trisodium salt(8CI);Solochrome Cyanine R (6CI);Alizarol Cyanine RC;Atlantichrome Cyanine RA;C.I. 43820;Chrome Blue 3R;Chrome Cyanine R;Chromoxane Cyanin R;Chromoxane Cyanine R;Chromoxane CyanineRA;Cromal Blue Black B;Diacromo Cyanine R;Diamond Cyanine R;EiochromeCyanine R;Eriochromcyanin No. 553;Eriochrome Cyanin R;Eriochrome Cyanine R;Eriochrome Cyanine RC;Fenakrom Blue XR;Mordant Blue 3;Omega Chrome CyanineGR;Pontachrome Blue ECR;Sunchromine Cyanine R;Tertrochrome Cyanine CR;