5-Chloro-3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2-hydroxybenzenesulfonic acid

CAS Registry Number®

25746-81-0
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CAS Name

5-Chloro-3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2-hydroxybenzenesulfonic acid

Molecular Formula

C16H13ClN4O5S

Molecular Mass

408.82

Cite this Page

5-Chloro-3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2-hydroxybenzenesulfonic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=25746-81-0 (retrieved 2024-04-16) (CAS RN: 25746-81-0).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C16H13ClN4O5S/c1-9-14(16(23)21(20-9)11-5-3-2-4-6-11)19-18-12-7-10(17)8-13(15(12)22)27(24,25)26/h2-8,14,22H,1H3,(H,24,25,26)

InChIKey

InChIKey=LSFNRVBPDLEXDS-UHFFFAOYSA-N

SMILES

O=C1N(N=C(C)C1N=NC2=C(O)C(S(=O)(=O)O)=CC(Cl)=C2)C3=CC=CC=C3

Canonical SMILES

O=C1N(N=C(C)C1N=NC2=CC(Cl)=CC(=C2O)S(=O)(=O)O)C=3C=CC=CC3

Other Names for this Substance

  • Benzenesulfonic acid, 5-chloro-3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2-hydroxy-
  • C.I. Mordant Red 19
  • Benzenesulfonic acid, 5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-
  • 1-Phenol-2-sulfonic acid, 4-chloro-6-(3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-ylazo)-
  • 5-Chloro-3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2-hydroxybenzenesulfonic acid

Deleted or Replaced CAS Registry Numbers

101272-73-5, 808168-93-6

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