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

Purity 97%+In StockPharmaceutical Standards
CAS No.51858-17-4
Molecular FormulaC25H16N4O12S2 2*K
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

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 chemical structure

Description

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) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C25H16N4O12S2 2*K. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC25H16N4O12S2 2*K
Molecular Weight667.64 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)20.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1971
Nitrogen Atoms4
Sulfur Atoms2

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