CHEBI:68629 - tartrazine acid

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ChEBI Name tartrazine acid
ChEBI ID CHEBI:68629
Definition A pyrazoles which is pyrazole-3-carboxylic acid substituted by an oxo group at position 5, a 4-sulfophenyl group at position 1 and (4-sulfophenyl)diazenyl group at position 4.
Stars This entity has been manually annotated by the ChEBI Team.
Supplier Information
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Formula C16H12N4O9S2
Net Charge 0
Average Mass 468.41800
Monoisotopic Mass 468.00457
InChI InChI=1S/C16H12N4O9S2/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29/h1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29)/b18-17+
InChIKey RFKITWRHKUYMRJ-ISLYRVAYSA-N
SMILES OC(=O)C1=NN(C(=O)C1\N=N\c1ccc(cc1)S(O)(=O)=O)c1ccc(cc1)S(O)(=O)=O
Roles Classification
Chemical Role(s): Bronsted acid
A molecular entity capable of donating a hydron to an acceptor (Bronsted base).
(via oxoacid )
View more via ChEBI Ontology
ChEBI Ontology
Outgoing tartrazine acid (CHEBI:68629) is a arenesulfonic acid (CHEBI:33555)
tartrazine acid (CHEBI:68629) is a monoazo compound (CHEBI:48959)
tartrazine acid (CHEBI:68629) is a monocarboxylic acid (CHEBI:25384)
tartrazine acid (CHEBI:68629) is a pyrazoles (CHEBI:26410)
tartrazine acid (CHEBI:68629) is conjugate acid of tartrazine(3−) (CHEBI:68628)
Incoming tartrazine(3−) (CHEBI:68628) is conjugate base of tartrazine acid (CHEBI:68629)
IUPAC Name
5-oxo-1-(4-sulfophenyl)-4-[(E)-(4-sulfophenyl)diazenyl]-4,5-dihydro-1H-pyrazole-3-carboxylic acid
Registry Numbers Types Sources
34175-08-1 CAS Registry Number ChemIDplus
951071 Reaxys Registry Number Reaxys
Last Modified
25 August 2023