pentasodium;2-[5-[(7-amino-1-sulfonatooxy-3H-naphthalen-3-id-2-yl)diazenyl]-2-[[4-[4-[(7-amino-1-sulfonatooxy-3H-naphthalen-3-id-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]anilino]-2-oxoacetate

五钠;2-[5-[(7-氨基-1-磺酸基氧基-3H-萘-3-基)二氮烯基]-2-[[4-[4-[(7-氨基-1-磺酸基氧基-3H-萘-3-基)二氮烯基]-3-甲基苯基]-2-甲基苯基]二氮烯基]苯胺基]-2-氧代乙酸酯

Also known as: C.I.31935, Oxamine Black MT

pentasodium;2-[5-[(7-amino-1-sulfonatooxy-3H-naphthalen-3-id-2-yl)diazenyl]-2-[[4-[4-[(7-amino-1-sulfonatooxy-3H-naphthalen-3-id-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]anilino]-2-oxoacetate (CAS 6771-91-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C42H28N9Na5O11S2 and a molecular weight of 1013.8 g/mol. It is also known as C.I.31935 and Oxamine Black MT. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6771-91-1

Jingsj CID

J-719890-4

Molecular Formula

C₄₂H₂₈N₉Na₅O₁₁S₂

Chinese Name

五钠;2-[5-[(7-氨基-1-磺酸基氧基-3H-萘-3-基)二氮烯基]-2-[[4-[4-[(7-氨基-1-磺酸基氧基-3H-萘-3-基)二氮烯基]-3-甲基苯基]-2-甲基苯基]二氮烯基]苯胺基]-2-氧代乙酸酯

Molecular Weight

1013.8 g/mol

Category

Organic Acids

Last updated

8/21/2026