2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diamino-5-methylphenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)

CAS Registry Number®

2429-83-6

CAS Name

2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diamino-5-methylphenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)

Molecular Formula

C35H29N9O7S2.2Na

Cite this Page

2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diamino-5-methylphenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=2429-83-6 (retrieved 2024-12-19) (CAS RN: 2429-83-6).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C35H29N9O7S2.2Na/c1-19-15-28(27(37)18-26(19)36)42-39-24-11-7-20(8-12-24)21-9-13-25(14-10-21)41-43-33-29(52(46,47)48)16-22-17-30(53(49,50)51)34(35(45)31(22)32(33)38)44-40-23-5-3-2-4-6-23;;/h2-18,45H,36-38H2,1H3,(H,46,47,48)(H,49,50,51);;

InChIKey

InChIKey=LCXMJXVKXMSKLB-UHFFFAOYSA-N

SMILES

NC=1C2=C(C=C(S(=O)(=O)O)C(N=NC3=CC=CC=C3)=C2O)C=C(S(=O)(=O)O)C1N=NC4=CC=C(C=C4)C5=CC=C(N=NC6=C(N)C=C(N)C(C)=C6)C=C5.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC2=CC(=C(N=NC3=CC=C(C=C3)C=4C=CC(N=NC=5C=C(C(N)=CC5N)C)=CC4)C(N)=C2C(O)=C1N=NC=6C=CC=CC6)S(=O)(=O)O

Other Names for this Substance

  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diamino-5-methylphenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)
  • C.I. Direct Black 4, disodium salt
  • C.I. Direct Black 4
  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4′-[(2,4-diamino-5-methylphenyl)azo][1,1′-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt
  • C.I. 30245

View All

Deleted or Replaced CAS Registry Numbers

27177-63-5

CAS INSIGHTSTM
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