Description

Alpha, Alpha, Alpha 20R 24R-Ethylcholestane is a high-purity, synthetic sterane derivative of significant interest in advanced chemical research and development. This compound serves as a critical reference standard and a versatile synthetic intermediate for the preparation of complex steroid analogs. It is primarily utilized by research institutions and industrial laboratories in the pharmaceutical, agrochemical, and advanced materials sectors, where precise molecular structure and high purity are paramount for innovation and process development.

Application

• Pharmaceutical Reference Standard: Used as a certified reference material (CRM) for analytical method development, validation, and quality control in steroid-based drug manufacturing.
• Steroid Synthesis Intermediate: Acts as a key chiral building block in the multi-step synthesis of novel therapeutic steroid molecules and hormone analogs.
• Biomarker Research: Employed in geochemical and environmental studies as a model compound for understanding sterane diagenesis and as a biomarker in petroleum analysis.
• Agrochemical Development: Serves as a precursor in the research and synthesis of plant growth regulators and other bioactive steroid-based agrochemicals.
• Academic & Industrial R&D: Utilized in fundamental organic chemistry research, including studies on stereochemistry, reaction mechanisms, and catalysis involving steroidal frameworks.
• Material Science: Investigated for potential use in the development of liquid crystals and other advanced organic materials due to its rigid, polycyclic structure.

Basic Information

Product Name	Alpha, Alpha, Alpha 20R 24R-Ethylcholestane
CAS No.	62446-14-4
Molecular Formula	C₂₉H₅₂
Molecular Weight	400.73 g/mol
Synonyms	20R,24R-Ethylcholestane; (20R,24R)-Ethylcholestane; 24R- Ethyl-5α-cholestane; 5α-Cholestane, 24-ethyl-, (20R,24R)-; Ethylcholestane (20R,24R) isomer; Sterane C29; 24-Ethylcholestane (20R,24R); 5α,14α,17α,20R,24R-24-Ethylcholestane
EINECS	Contact for details

Quality Control

Our Alpha, Alpha, Alpha 20R 24R-Ethylcholestane is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and structural confirmation, to ensure it meets the high standards required for research and industrial applications. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and other critical parameters.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Specific Rotation	Contact for details
Heavy Metals	< 10 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.