Description

Alpha, Beta, Beta 20R-Cholestane is a high-purity, synthetic sterane compound, a key structural isomer within the cholestane family. This compound is of significant value as a critical reference standard and analytical tool in geochemical and biochemical research. It is primarily needed by research institutions, analytical laboratories, and specialty chemical manufacturers working in petroleum geochemistry, biomarker studies, and the synthesis of complex steroidal molecules.

Application

• Geochemical Biomarker Analysis: Serves as an essential internal standard and calibration reference in gas chromatography-mass spectrometry (GC-MS) for identifying and quantifying sterane distributions in crude oils and sedimentary rocks, aiding in oil-source correlation and maturity assessments.
• Petroleum Exploration Research: Used in laboratory studies to understand the diagenetic and catagenetic pathways of sterols in the geological record, providing insights into depositional environments.
• Organic Geochemistry Standards: A critical component in certified reference material (CRM) kits for ensuring accuracy and precision in the analysis of complex hydrocarbon mixtures.
• Biochemical Research: Employed as a sophisticated intermediate or analog in studies related to cholesterol metabolism, membrane biophysics, and the synthesis of novel steroidal compounds.
• Pharmaceutical Development: Acts as a high-purity building block or reference compound in the research and development of steroidal drugs and diagnostics.
• Academic & Industrial R&D: Supports fundamental and applied research in chemistry and geology departments, as well as in the R&D divisions of energy and life science companies.

Basic Information

Product Name	Alpha, Beta, Beta 20R-Cholestane
CAS No.	69483-47-2
Molecular Formula	C27H48
Molecular Weight	372.67 g/mol
Synonyms	20R-5α,14β,17β-Cholestane; 5α,14β,17β-Cholestane (20R); 14β,17β-Cholestane; 5α(H),14β(H),17β(H)-Cholestane (20R); Diasterane (specific isomer); 13β,17α-Diaethylgonane (systematic derivative); Geochemical Sterane Standard; NMR Cholestane Isomer
EINECS	Contact for details

Quality Control

Every batch of Alpha, Beta, Beta 20R-Cholestane is manufactured and analyzed under strict quality management protocols. We provide comprehensive analytical documentation, including Certificates of Analysis (COA) detailing purity, identity confirmation via spectroscopic methods, and impurity profiles. Our quality systems ensure traceability and consistency, meeting the stringent requirements of research and analytical reference material applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR / NMR)	Conforms to structure
Assay (HPLC / GC)	≥ 95.0% (Area %)
Purity (HPLC)	≥ 98.0% (Typical)
Melting Point	Contact for details
Specific Rotation	Contact for details
Heavy Metals	< 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.