73507-22-9

Cuprate(3-), [m-[3-[2-[3,3'-di(hydroxy-kO)-4'-[2-[1-(hydroxy-kO)-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl-kN1][1,1'-biphenyl]-4-yl]diazenyl-kN1]-4-(hydroxy-kO)-2,7-naphthalenedisulfonato(7-)]]di-,sodium (1:3)