§ 721.5262 - 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[2-[2-(ethenylsulfonyl)ethoxy] ethyl]amino]-1,3,5-triazin-2-yl]amino]-4- hydroxy-3-[2-(1-sulfo-2- naphthalenyl)diazenyl]-, sodium salt (1:3).  


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