Direct Red 75

CAS Registry Number®

2829-43-8
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CAS Name

Direct Red 75

Molecular Formula

C33H26N8O15S4.4Na

Cite this Page

Direct Red 75.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=2829-43-8 (retrieved 2024-05-06) (CAS RN: 2829-43-8).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C33H26N8O15S4.4Na/c34-21-5-1-15-9-19(57(45,46)47)13-25(42)29(15)31(21)40-38-23-7-3-17(11-27(23)59(51,52)53)36-33(44)37-18-4-8-24(28(12-18)60(54,55)56)39-41-32-22(35)6-2-16-10-20(58(48,49)50)14-26(43)30(16)32;;;;/h1-14,42-43H,34-35H2,(H2,36,37,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H,54,55,56);;;;

InChIKey

InChIKey=RQYFVLJXAQMSHI-UHFFFAOYSA-N

SMILES

N(=NC1=C(S(=O)(=O)O)C=C(NC(NC2=CC(S(=O)(=O)O)=C(N=NC=3C4=C(C=C(S(=O)(=O)O)C=C4O)C=CC3N)C=C2)=O)C=C1)C=5C6=C(C=C(S(=O)(=O)O)C=C6O)C=CC5N.[Na]

Canonical SMILES

[Na].O=C(NC1=CC=C(N=NC2=C(N)C=CC3=CC(=CC(O)=C32)S(=O)(=O)O)C(=C1)S(=O)(=O)O)NC4=CC=C(N=NC5=C(N)C=CC6=CC(=CC(O)=C65)S(=O)(=O)O)C(=C4)S(=O)(=O)O

Other Names for this Substance

  • 2-Naphthalenesulfonic acid, 5,5′-[carbonylbis[imino(2-sulfo-4,1-phenylene)-2,1-diazenediyl]]bis[6-amino-4-hydroxy-, sodium salt (1:4)
  • C.I. Direct Red 75, tetrasodium salt
  • 2-Naphthalenesulfonic acid, 5,5′-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]]bis[6-amino-4-hydroxy-, tetrasodium salt
  • C.I. Direct Red 75
  • Chlorazol Fast Pink

View All

Deleted or Replaced CAS Registry Numbers

116688-12-1, 12040-62-9

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