Oxaprozin Impurity 1 CAS 642-04-6

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.642-04-6
Molecular FormulaC28H20N2
Molecular Weight384.47 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Oxaprozin Impurity 1 CAS 642-04-6 chemical structure

Description

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, Oxaprozin Impurity 1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 384.47 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Oxaprozin Impurity 1 (CAS 642-04-6) is a certified pharmaceutical impurity reference standard with the molecular formula C28H20N2 and a molecular weight of 384.47 g/mol.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

As a certified reference material (CRM), Oxaprozin Impurity 1 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

Molecular FormulaC28H20N2
Molecular Weight384.47 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)20.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms2

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