Calcitriol impurity 40 CAS CATO-C4X-151040

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-151040
Molecular FormulaC27H44O4
Molecular Weight432.64 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Calcitriol impurity 40 CAS CATO-C4X-151040 chemical structure

Description

As a certified reference material (CRM), Calcitriol impurity 40 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.

Calcitriol impurity 40 (CAS CATO-C4X-151040) is a certified pharmaceutical impurity reference standard with the molecular formula C27H44O4 and a molecular weight of 432.64 g/mol.

Based on its molecular formula C27H44O4, Calcitriol impurity 40 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 432.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC27H44O4
Molecular Weight432.64 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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