C.I. 73031;AC1O53O9;disodium [6-chloro-2-(5,7-dichloro-3-sulfonatooxy-1H-indol-2-yl)-1H-indol-3-yl] sulfate;(2,2'-Bi-1H-indole)-3,3'-diol, 5,6',7-trichloro-, bis(hydrogen sulfate) (ester), disodium salt;3763-85-7
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