5a(H)-Pregnane CAS 641-85-0

Purity 97%+In StockPharmaceutical Standards
CAS No.641-85-0
Molecular FormulaC21H36
Molecular Weight288.51 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5a(H)-Pregnane CAS 641-85-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 288.51 g/mol gives 5a(H)-Pregnane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 5a(H)-Pregnane (CAS 641-85-0), a certified reference material (molecular formula C21H36, MW 288.51 g/mol) for analytical method development and quality control.

Based on its molecular formula C21H36, 5a(H)-Pregnane contains an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 288.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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

As a certified reference material (CRM), 5a(H)-Pregnane 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 FormulaC21H36
Molecular Weight288.51 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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