Direct Red 83

C.I. Direct Red 83

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copper(2+) sodium 4-oxido-7-[({5-oxido-6-[(E)-(2-oxido-5-sulfonatophenyl)diazenyl]-7-sulfonatonaphthalen-2-yl}carbamoyl)amino]-3-[(E)-(2-oxido-5-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate (2:4:1)

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copper(2+) sodium 4-oxido-7-[({5-oxido-6-[(E)-(2-oxido-5-sulfonatophenyl)diazenyl]-7-sulfonatonaphthalen-2-yl}carbamoyl)amino]-3-[(E)-(2-oxido-5-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate (2:4:1)

Cuprate(4-), [-[[7,7\'-(carbonyldiimino) bis[4-hydroxy-3-[(2-hydroxy-5-sulfophenyl)azo ]-2-naphthalenesulfonato]](8-)]]di-, tetrasodium