1-Naphthalenesulfonic acid, 2-[2-[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]diazenyl]-, sodium salt (1:2)

CAS Registry Number®

12220-64-3
No image available.

CAS Name

1-Naphthalenesulfonic acid, 2-[2-[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]diazenyl]-, sodium salt (1:2)

Molecular Formula

C20H14Cl2N4O7S2.2Na

Cite this Page

1-Naphthalenesulfonic acid, 2-[2-[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-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=12220-64-3 (retrieved 2024-09-20) (CAS RN: 12220-64-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C20H14Cl2N4O7S2.2Na/c1-10-18(20(27)26(25-10)16-8-14(22)17(9-13(16)21)34(28,29)30)24-23-15-7-6-11-4-2-3-5-12(11)19(15)35(31,32)33;;/h2-9,18H,1H3,(H,28,29,30)(H,31,32,33);;

InChIKey

InChIKey=CGMCYZSWMLBZQO-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)C=1C2=C(C=CC1N=NC3C(=O)N(N=C3C)C4=C(Cl)C=C(S(=O)(=O)O)C(Cl)=C4)C=CC=C2.[Na]

Canonical SMILES

[Na].O=C1N(N=C(C)C1N=NC=2C=CC=3C=CC=CC3C2S(=O)(=O)O)C4=CC(Cl)=C(C=C4Cl)S(=O)(=O)O

Other Names for this Substance

  • 1-Naphthalenesulfonic acid, 2-[2-[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]diazenyl]-, sodium salt (1:2)
  • 1-Naphthalenesulfonic acid, 2-[[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-, disodium salt
  • C.I. Acid Yellow 19
  • Erio Fast Yellow G
  • Acid Yellow 19

View All

Deleted or Replaced CAS Registry Numbers

66556-82-9, 70865-22-4