[(2R,3R,4R,5R)-5-bromo-3-(4-chlorobenzoyloxy)-4-fluoro-4-methyloxolan-2-yl]methyl 4-chlorobenzoate CAS 1294481-81-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1294481-81-4
Molecular FormulaC20H28BrCl2FO5
Molecular Weight518.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

[(2R,3R,4R,5R)-5-bromo-3-(4-chlorobenzoyloxy)-4-fluoro-4-methyloxolan-2-yl]methyl 4-chlorobenzoate CAS 1294481-81-4 chemical structure

Description

Based on its molecular formula C20H28BrCl2FO5, [(2R,3R,4R,5R)-5-bromo-3-(4-chlorobenzoyloxy)-4-fluoro-4-methyloxolan-2-yl]methyl 4-chlorobenzoate contains a steroid core, a hydroxyl group, an ether linkage, fluorine/chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 518.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).

CATO supplies [(2R,3R,4R,5R)-5-bromo-3-(4-chlorobenzoyloxy)-4-fluoro-4-methyloxolan-2-yl]methyl 4-chlorobenzoate (CAS 1294481-81-4), a certified reference material (molecular formula C20H28BrCl2FO5, MW 518.24 g/mol) for analytical method development and quality control.

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.

As a certified reference material (CRM), [(2R,3R,4R,5R)-5-bromo-3-(4-chlorobenzoyloxy)-4-fluoro-4-methyloxolan-2-yl]methyl 4-chlorobenzoate 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 FormulaC20H28BrCl2FO5
Molecular Weight518.24 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Halogen ContentF/Cl/Br-containing

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