Oseltamivir Impurity 53 CAS 204255-11-8 (unlabelled)

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.204255-11-8 (unlabelled)
Molecular Formula-
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Oseltamivir Impurity 53 CAS 204255-11-8 (unlabelled) chemical structure

Description

The occurrence of Oseltamivir Impurity 53 is closely related to deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Oseltamivir Impurity 53 (CAS 204255-11-8 (unlabelled)) is a certified pharmaceutical impurity reference standard with the molecular formula C16H23D5N2O4H3O4P and a molecular weight of 415.43 g/mol.

The molecular framework of Oseltamivir Impurity 53 (C16H23D5N2O4H3O4P) is characterized by deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), Oseltamivir Impurity 53 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 FormulaC16H23D5N2O4 H3O4P
Molecular Weight415.43 g/mol
AppearanceOff-white to pale yellow crystalline powder
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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms2

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