1H-Pyrazole-3-carboxylic acid, 4-[5-[3-carboxy-1,5-dihydro-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene]-1,3-pentadien-1-yl]-5-hydroxy-1-(4-sulfophenyl)-, potassium salt (1:2) CAS 51858-17-4

Description

Compared with other compounds in its class, the molecular weight of 667.64 g/mol gives 1H-Pyrazole-3-carboxylic acid, 4-[5-[3-carboxy-1,5-dihydro-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene]-1,3-pentadien-1-yl]-5-hydroxy-1-(4-sulfophenyl)-, potassium salt (1:2) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 1H-Pyrazole-3-carboxylic acid, 4-[5-[3-carboxy-1,5-dihydro-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene]-1,3-pentadien-1-yl]-5-hydroxy-1-(4-sulfophenyl)-, potassium salt (1:2) (CAS 51858-17-4), a certified reference material (molecular formula C25H16N4O12S2K, MW 667.64 g/mol) for analytical method development and quality control.

Structurally, 1H-Pyrazole-3-carboxylic acid, 4-[5-[3-carboxy-1,5-dihydro-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene]-1,3-pentadien-1-yl]-5-hydroxy-1-(4-sulfophenyl)-, potassium salt (1:2) (C25H16N4O12S2K) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 667.64 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 1H-Pyrazole-3-carboxylic acid, 4-[5-[3-carboxy-1,5-dihydro-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene]-1,3-pentadien-1-yl]-5-hydroxy-1-(4-sulfophenyl)-, potassium salt (1:2) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com