C.I. Acid Yellow 23 structure

C.I. Acid Yellow 23

trisodium;3-oxo-2-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-1H-pyrazole-5-carboxylate

Also Known As: Tartrazine, Acid yellow 23, Hydrazine Yellow, Tartraphenine, Tartran Yellow, Filter Yellow, Aizen tartrazine, tartarazine, Wool Yellow, Tartrazin, lake tartrazine, Kiton Yellow T, Atul Tartrazine, Erio Tartrazine, Hidazid Tartrazine

CAS: 1934-21-0
Molecular Formula C16H9N4Na3O9S2
Molecular Weight 533.9504 g/mol
LogP -9.24
Topological Polar Surface Area 217.04 Ų
Hydrogen Bond Donors 1
Hydrogen Bond Acceptors 12
Rotatable Bonds 6
Exact Mass 533.9504
Heavy Atoms 34
Complexity 1465

Chemical Identifiers

CAS Number 1934-21-0
SMILES C1=CC(=CC=C1N=NC2=C(NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)[O-])C(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]

Product Overview

C.I. Acid Yellow 23 (CAS 1934-21-0), with molecular formula C16H9N4Na3O9S2 and molecular weight 533.9504 g/mol. IUPAC: trisodium;3-oxo-2-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-1H-pyrazole-5-carboxylate.

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We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
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