4-((6-Methylbenzothiazol-2-yl)azo)-N-ethyl-N-(2-sulfoethyl)aniline,potassium salt 71673-06-8 EINECS 275-829-6 Ethanesulfonic acid, 2-(ethyl(4-((6-methyl-2-benzothiazolyl)azo)phenyl)amino)-, potassium salt Potassium 2-(ethyl(4-((6-methyl-2-benzothiazol-yl)azo)phenyl)amino)ethanesulphonate