Synonyms: 1H-Indol-3-ol,5,7-dichloro-2-[6-chloro-4-methyl-3-(sulfooxy)benzo[b]thien-2-yl]-, hydrogensulfate (ester), disodium salt (9CI); Indol-3-ol,5,7-dichloro-2-(6-chloro-3-hydroxy-4-methylbenzo[b]thien-2-yl)-, bis(hydrogensulfate) (ester), disodium salt (8CI); Indol-3-ol, 5,7-dichloro-2-(6-chloro-3-hydroxy-4-methylbenzo[b]thien-2-yl)-,bis(hydrogen sulfate), disodium salt (7CI); Anthrasol Violet ARR; ArlindonePrinting Violet ARR; C.I. 73601; C.I. Solubilised Vat Violet 8, disodium salt;Indigosol Printing Violet IRR; Indigosol Violet ARR; Kambosol Violet IRR