Synonyms: [2,2'-Bibenzo[b]thiophene]-3,3'-diol,6-chloro-6'-methoxy-4-methyl-, bis(hydrogen sulfate), disodium salt (8CI,9CI);Anthrasol Scarlet IB; Arlindone Scarlet IB; C.I. 73356; C.I. Solubilised VatRed 6, disodium salt; Cibantine Scarlet F3B; Indigosol Scarlet IB; SandozolScarlet 2B; Solasol Scarlet BS; Tinosol Scarlet 3BL