68540-90-9 EINECS 271-326-0 Ethanesulfonic acid, 2-(3-(2-methoxy-5-((phenylamino)carbonyl)phenyl)-1-methyl-2-triazenyl)-, monosodium salt N-Methyl-N-(2-methoxy-5-((phenylamino)carbonyl)phenylazo)taurine, sodium salt Sodium 2-(3-(2-methoxy-5-((phenylamino)carbonyl)phenyl)-1-methyltriazen-2-yl)ethanesulphonate