5α-Cholestane-2,2,4,4-d4 CAS 205529-74-4

Purity 97%+In StockPharmaceutical Standards
CAS No.205529-74-4
Molecular Formula-
Molecular Weight376.69 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5α-Cholestane-2,2,4,4-d4 CAS 205529-74-4 chemical structure

Description

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

5α-Cholestane-2,2,4,4-d4 (CAS 205529-74-4) is a high-purity analytical reference standard with the molecular formula C27H44D4 and a molecular weight of 376.69 g/mol.

5α-Cholestane-2,2,4,4-d4 (C27H44D4) contains deuterium isotope labeling, an aromatic ring system. 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).

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 FormulaC27H44D4
Molecular Weight376.69 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
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2015

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