1-Naphthalenesulfonic acid, 4-hydroxy-3-[2-[4′-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-3,3′-dimethyl[1,1′-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)

CAS Registry Number®

6420-06-0

CAS Name

1-Naphthalenesulfonic acid, 4-hydroxy-3-[2-[4′-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-3,3′-dimethyl[1,1′-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)

Molecular Formula

C34H26N4O8S2.2Na

Cite this Page

1-Naphthalenesulfonic acid, 4-hydroxy-3-[2-[4′-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-3,3′-dimethyl[1,1′-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=6420-06-0 (retrieved 2024-12-23) (CAS RN: 6420-06-0).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C34H26N4O8S2.2Na/c1-19-16-21(10-13-27(19)35-37-29-15-12-24-26(33(29)39)8-5-9-31(24)47(41,42)43)22-11-14-28(20(2)17-22)36-38-30-18-32(48(44,45)46)23-6-3-4-7-25(23)34(30)40;;/h3-18,39-40H,1-2H3,(H,41,42,43)(H,44,45,46);;

InChIKey

InChIKey=YMAHROCHQPFJFR-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)C=1C2=C(C(O)=C(N=NC3=C(C)C=C(C=C3)C4=CC(C)=C(N=NC5=C(O)C6=C(C=C5)C(S(=O)(=O)O)=CC=C6)C=C4)C1)C=CC=C2.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC=CC2=C(O)C(N=NC3=CC=C(C=C3C)C4=CC=C(N=NC=5C=C(C=6C=CC=CC6C5O)S(=O)(=O)O)C(=C4)C)=CC=C21

Other Names for this Substance

  • 1-Naphthalenesulfonic acid, 4-hydroxy-3-[2-[4′-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-3,3′-dimethyl[1,1′-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)
  • C.I. Direct Violet 28, disodium salt
  • C.I. Direct Violet 28
  • Azo Blue
  • 1-Naphthalenesulfonic acid, 4-hydroxy-3-[[4′-[(1-hydroxy-5-sulfo-2-naphthalenyl)azo]-3,3′-dimethyl[1,1′-biphenyl]-4-yl]azo]-, disodium salt

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Deleted or Replaced CAS Registry Numbers

1374036-79-9

CAS INSIGHTSTM
Pile of blue, green, and white color of capsule pills with modern design light.