2-Naphthalenesulfonic acid, 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2)

CAS Registry Number®

5905-22-6

CAS Name

2-Naphthalenesulfonic acid, 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2)

Molecular Formula

C36H27N7O9S2.2Na

Molecular Mass

811.75

Cite this Page

2-Naphthalenesulfonic acid, 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]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=5905-22-6 (retrieved 2025-09-06) (CAS RN: 5905-22-6).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C36H27N7O9S2.2Na/c37-24-6-4-21(5-7-24)35(45)38-28-3-1-2-22(18-28)36(46)39-29-14-17-31-23(19-29)20-32(54(50,51)52)33(34(31)44)43-42-26-10-8-25(9-11-26)40-41-27-12-15-30(16-13-27)53(47,48)49;;/h1-20,44H,37H2,(H,38,45)(H,39,46)(H,47,48,49)(H,50,51,52);;

InChIKey

InChIKey=OEXNBZCHYKSZFF-UHFFFAOYSA-N

SMILES

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

Canonical SMILES

[Na].O=C(NC1=CC=CC(=C1)C(=O)NC=2C=CC=3C(C2)=CC(=C(N=NC4=CC=C(N=NC5=CC=C(C=C5)S(=O)(=O)O)C=C4)C3O)S(=O)(=O)O)C6=CC=C(N)C=C6

Other Names for this Substance

  • 2-Naphthalenesulfonic acid, 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2)
  • C.I. Direct Red 152, disodium salt
  • 2-Naphthalenesulfonic acid, 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-, disodium salt
  • C.I. 28360
  • Benzamin Red 5B

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