Paricalcitol Impurity 11 CAS 1227926-70-6

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.1227926-70-6
Molecular FormulaC24H37O2PSi
Molecular Weight416.61 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Paricalcitol Impurity 11 CAS 1227926-70-6 chemical structure

Description

The occurrence of Paricalcitol Impurity 11 is closely related to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Paricalcitol Impurity 11 (CAS 1227926-70-6) is a certified pharmaceutical impurity reference standard with the molecular formula C24H37O2PSi and a molecular weight of 416.61 g/mol.

Based on its molecular formula C24H37O2PSi, Paricalcitol Impurity 11 contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 416.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO manufactures Paricalcitol Impurity 11 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 FormulaC24H37O2PSi
Molecular Weight416.61 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990

Related Paricalcitol Standards

Recommended Standards

Why CATO?