4-(2-(3-(Methoxycarbonyl)-5-oxo-1-(4-sulfophenyl)-1,5-dihydro-4H-pyrazol-4-ylidene)hydrazineyl)benzenesulfonic Acid
- CAS
- 791545-81-8
- Formula
- C17H14N4O9S2
- MW
- 482.45 g/mol
VQ-042370
Impurity reference standards
Tartrazine impurities & reference standards
Characterised Tartrazine impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
6reference materials
COAHPLC · NMR · MS on request
![4-(2-(4',5-Disulfo-[1,1'-biphenyl]-2-yl)hydrazineylidene)-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic Acid chemical structure](/media/structures/QCWMHQBWZVKDLF-UHFFFAOYSA-N.svg)
4-(2-(4',5-Disulfo-[1,1'-biphenyl]-2-yl)hydrazineylidene)-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic Acid
- CAS
- 750530-77-9
- Formula
- C22H16N4O12S3
- MW
- 624.6 g/mol
VQ-042369
Sodium 4,4'-(5-oxo-4-(2-(4-sulfonatophenyl)hydrazineylidene)-4,5-dihydro-1H-pyrazole-1,3-diyl)dibenzenesulfonate
- CAS
- 104236-31-9
- Formula
- C21H13N4Na3O10S3
- MW
- 646.5 g/mol
VQ-034048
Sodium 5-oxo-1-phenyl-4-((4-sulfonatophenyl)diazenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
- CAS
- 104236-33-1
- Formula
- C16H10N4Na2O6S
- MW
- 432.3 g/mol
VQ-034049
Sodium 5-oxo-4-(phenyldiazenyl)-1-(4-sulfonatophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
- CAS
- 1934-22-1
- Formula
- C16H10N4Na2O6S
- MW
- 432.3 g/mol
VQ-042371
FAQs — Tartrazine impurities
Which Tartrazine impurities do you supply?
We list 6 Tartrazine-related reference materials, including process impurities, degradation products and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.
What are Tartrazine impurity standards used for?
They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).
Can you synthesise a Tartrazine impurity that is not listed?
Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.
Request Tartrazine impurity standards
We reply within one business day with price, pack options, lead time and documentation.