5251-81-0 AR-1I2271 chromium(3+) sodium 1-(3-chlorophenyl)-3-methyl-4-{(e)-[5-(methylsulfonyl)-2-oxidophenyl]diazenyl}-1h-pyrazol-5-olate(1:1:2) CAS 5251-81-0

Purity 97%+In StockPharmaceutical Standards
CAS No.5251-81-0
Molecular FormulaC12H11NO5
Molecular Weight249.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5251-81-0 AR-1I2271 chromium(3+) sodium 1-(3-chlorophenyl)-3-methyl-4-{(e)-[5-(methylsulfonyl)-2-oxidophenyl]diazenyl}-1h-pyrazol-5-olate(1:1:2) CAS 5251-81-0 chemical structure

Description

5251-81-0 AR-1I2271 chromium(3+) sodium 1-(3-chlorophenyl)-3-methyl-4-{(e)-[5-(methylsulfonyl)-2-oxidophenyl]diazenyl}-1h-pyrazol-5-olate(1:1:2) (CAS 5251-81-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C12H11NO5. Molecular weight: 249.22 g/mol. Each batch is supplied with a Certificate of Analysis (COA).

Physical & Chemical Properties

Molecular FormulaC12H11NO5
Molecular Weight249.22 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
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.)1958
Nitrogen Atoms1

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