Ergocalciferol EP Impurity A CAS 51744-66-2

Purity >87%In StockPharmaceutical Standards
CAS No.51744-66-2
Molecular FormulaC28H44O
Molecular Weight396.65 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ergocalciferol EP Impurity A CAS 51744-66-2 chemical structure

Description

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

Ergocalciferol EP Impurity A (CAS 51744-66-2) is a high-purity analytical reference standard with the molecular formula C28H44O and a molecular weight of 396.65 g/mol.

Ergocalciferol EP Impurity A (C28H44O) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures Ergocalciferol EP Impurity A 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 FormulaC28H44O
Molecular Weight396.65 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>87%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1971

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