72139-04-9 Benzenesulfonic acid, ((6'-((2,4-dimethylphenyl)amino)-1,1-dioxidospiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthen)-3'-yl)amino)dimethyl-, monosodium salt EINECS 276-362-0 Sodium ((6'-((2,4-dimethylphenyl)amino)spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3'-yl)amino)xylenesulphonate S,S-dioxide