Cholesterol Impurity 3 CAS 51982-45-7

Purity 97%+In StockPharmaceutical Standards
CAS No.51982-45-7
Molecular FormulaC27H42O
Molecular Weight382.62 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Cholesterol Impurity 3 CAS 51982-45-7 chemical structure

Description

Cholesterol Impurity 3 (C27H42O) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Cholesterol Impurity 3 (CAS 51982-45-7) is a high-purity analytical reference standard with the molecular formula C27H42O and a molecular weight of 382.62 g/mol.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC27H42O
Molecular Weight382.62 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
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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