3-O-tert-Butyldimethylsilyl Cholesterol CAS 57711-50-9

Purity 97%+In StockPharmaceutical Standards
CAS No.57711-50-9
Molecular FormulaC33H60OSi
Molecular Weight500.91 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-O-tert-Butyldimethylsilyl Cholesterol CAS 57711-50-9 chemical structure

Description

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.

3-O-tert-Butyldimethylsilyl Cholesterol (CAS 57711-50-9), molecular formula C33H60OSi and molecular weight 500.91 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3-O-tert-Butyldimethylsilyl Cholesterol (C33H60OSi) contains a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 500.91 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), 3-O-tert-Butyldimethylsilyl Cholesterol 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.

Physical & Chemical Properties

Molecular FormulaC33H60OSi
Molecular Weight500.91 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1973

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