4,5-Dihydro-5-oxo-4-(2-phenyldiazenyl)-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid

CAS Registry Number®

25739-68-8

CAS Name

4,5-Dihydro-5-oxo-4-(2-phenyldiazenyl)-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid

Molecular Formula

C16H12N4O6S

Molecular Mass

388.35

Cite this Page

4,5-Dihydro-5-oxo-4-(2-phenyldiazenyl)-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=25739-68-8 (retrieved 2024-10-08) (CAS RN: 25739-68-8).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C16H12N4O6S/c21-15-13(18-17-10-4-2-1-3-5-10)14(16(22)23)19-20(15)11-6-8-12(9-7-11)27(24,25)26/h1-9,13H,(H,22,23)(H,24,25,26)

InChIKey

InChIKey=FASXADTZNYAUFG-UHFFFAOYSA-N

SMILES

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

Canonical SMILES

O=C(O)C1=NN(C(=O)C1N=NC=2C=CC=CC2)C3=CC=C(C=C3)S(=O)(=O)O

Other Names for this Substance

  • 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-4-(2-phenyldiazenyl)-1-(4-sulfophenyl)-
  • C.I. Acid Yellow 27
  • 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-4-(phenylazo)-1-(4-sulfophenyl)-
  • 4,5-Dihydro-5-oxo-4-(2-phenyldiazenyl)-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid

Deleted or Replaced CAS Registry Numbers

157249-19-9

CAS INSIGHTSTM
© Nobel Prize Outreach. Photo: Hugh Fox