5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene CAS 4042-95-9

Purity 97%+In StockPharmaceutical Standards
CAS No.4042-95-9
Molecular FormulaC30H50O2
Molecular Weight442.72 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene CAS 4042-95-9 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene.

CATO supplies 5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene (CAS 4042-95-9), a certified reference material (molecular formula C30H50O2, MW 442.72 g/mol) for analytical method development and quality control.

Owing to a steroid core, a hydroxyl group, an ether linkage, 5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 442.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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), 5a(H),17a(H),(20R)-3B-Acetoxyergost-8(14)-ene 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 FormulaC30H50O2
Molecular Weight442.72 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958

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