Clindamycin Phosphas EP Impurity B CAS 54887-31-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.54887-31-9
Molecular FormulaC17H32ClN2O8PS
Molecular Weight490.94 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Clindamycin Phosphas EP Impurity B CAS 54887-31-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 490.94 g/mol gives Clindamycin Phosphas EP Impurity B distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Clindamycin Phosphas EP Impurity B (CAS 54887-31-9) is a certified pharmaceutical impurity reference standard with the molecular formula C17H32ClN2O8PS and a molecular weight of 490.94 g/mol.

Clindamycin Phosphas EP Impurity B (C17H32ClN2O8PS) contains an amide group, a sulfone group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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), Clindamycin Phosphas EP Impurity B 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 FormulaC17H32ClN2O8PS
Molecular Weight490.94 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)2.5
CAS Registry Year (est.)1972
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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