Ceftizoxime Impurity 21 CAS 36923-21-4

Purity 97%+In StockPharmaceutical Standards
CAS No.36923-21-4
Molecular FormulaC20H18N2O3S
Molecular Weight366.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ceftizoxime Impurity 21 CAS 36923-21-4 chemical structure

Description

Ceftizoxime Impurity 21 (CAS 36923-21-4) is a high-purity analytical reference standard with the molecular formula C20H18N2O3S and a molecular weight of 366.43 g/mol.

Ceftizoxime Impurity 21 (C20H18N2O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures Ceftizoxime Impurity 21 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC20H18N2O3S
Molecular Weight366.43 g/mol
Purity97%+
StorageStore at 2-8°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)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1967
Nitrogen Atoms2
Sulfur Atoms1

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