Synonyms: 3-(2-Hydroxyethyl)-2-[5-[3-(2-hydroxyethyl)-2-benzothiazolinylidene]-1,3-pentadienyl]benzothiazoliumbromide (7CI); Benzothiazolium,3-(2-hydroxyethyl)-2-[5-[3-(2-hydroxyethyl)-2(3H)-benzothiazolylidene]-1,3-pentadienyl]-,bromide (9CI); Benzothiazolium, 3-(2-hydroxyethyl)-2-[5-[3-(2-hydroxyethyl)-2-benzothiazolinylidene]-1,3-pentadienyl]-,bromide (8CI); Thiadicarbocyanine bromide, 3,3'-bis(2-hydroxyethyl)- (8CI);3,3'-Di-b-hydroxyethylthiadicarbocyaninebromide