1-(2-Methyl-4,5-disulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid CAS 293327-21-6

Purity 97%+In StockPharmaceutical Standards
CAS No.293327-21-6
Molecular FormulaC11H10N2O9S2
Molecular Weight378.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(2-Methyl-4,5-disulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid CAS 293327-21-6 chemical structure

Description

1-(2-Methyl-4,5-disulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 293327-21-6) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C11H10N2O9S2. Molecular weight: 378.34 g/mol. Each batch is supplied with a Certificate of Analysis (COA).

Physical & Chemical Properties

Molecular FormulaC11H10N2O9S2
Molecular Weight378.34 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2
Sulfur Atoms2

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