Synonyms: Bis(bis(2-hydroxyethyl)ammonium) 2'-(4-((4,5-dihydro-3-methyl-5-oxo-1-(p-sulphonatophenyl)-1H-pyrazol-4-yl)azo)phenyl)-6-methyl(2,6'-benzothiazole)-7-sulphonate;(2,6'-Bibenzothiazole)-7-sulfonic acid, 2'-(4-((4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl)azo)phenyl)-6-methyl-, compd. with 2,2'-iminobis(ethanol) (1:2)