Calcitriol Impurity 13 CAS 169900-32-7

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.169900-32-7
Molecular FormulaC39H70O4Si2
Molecular Weight659.14 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Calcitriol Impurity 13 CAS 169900-32-7 chemical structure

Description

CATO manufactures Calcitriol Impurity 13 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.

Calcitriol Impurity 13 (CAS 169900-32-7) is a certified pharmaceutical impurity reference standard with the molecular formula C39H70O4Si2 and a molecular weight of 659.14 g/mol.

Based on its molecular formula C39H70O4Si2, Calcitriol Impurity 13 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 659.14 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.

Physical & Chemical Properties

Molecular FormulaC39H70O4Si2
Molecular Weight659.14 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2005

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