Description

(24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane is a high-purity mixture of two specific cyclocholestane isomers, a class of steroidal compounds. This product is valued for its role as a critical intermediate or reference standard in advanced organic synthesis and analytical research. It is primarily sought by pharmaceutical R&D and fine chemical synthesis laboratories for developing novel therapeutic agents and studying sterol metabolism.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel sterol-based drug candidates and active pharmaceutical ingredients (APIs).
• Research Chemical: Used as a reference standard or starting material in academic and industrial research focused on steroid chemistry and metabolic pathways.
• Biochemical Research: Investigation of cholesterol analogs and their interactions with biological systems, including enzyme inhibition studies.
• Fine Chemical Synthesis: Intermediate for the production of specialized steroidal compounds used in agrochemicals or advanced materials.
• Analytical Standard: Serves as a high-purity calibrant or standard in chromatographic (HPLC, GC) analysis for quality control in related manufacturing processes.

Basic Information

Product Name	(24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane
CAS No.	36545-67-2
Molecular Formula	C28H48 (Methyl) / C29H50 (Ethyl)
Molecular Weight	384.69 g/mol (Methyl) / 398.71 g/mol (Ethyl)
Synonyms	3,5-Cyclocholestane, 24-methyl-, (24R)-; 3,5-Cyclocholestane, 24-ethyl-, (24R)-; 24-Methyl-3,5-cyclocholestane; 24-Ethyl-3,5-cyclocholestane; Cyclocholestane derivative mixture; Steroidal cyclopropane derivative; (24R)-24-Methylcyclopropacholestane; (24R)-24-Ethylcyclopropacholestane
EINECS	Contact for details

Quality Control

Our (24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane is manufactured under strict quality systems. Every batch undergoes rigorous analytical testing, including HPLC and GC analysis, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, isomer ratio, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and compatible with strong acid/organic solvent environments. Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Total of both isomers)
Isomer Ratio (GC/HPLC)	Specified on COA
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity	≤ 1.0%
Total Impurities	≤ 5.0%

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