Description

24R-Methylcholest-5-Ene And 24R-Ethylcholest-5-Ene CAS NO 76866-89-2 is a high-purity mixture of two specific C-24 alkylated sterol isomers, serving as critical reference standards and synthetic intermediates. This compound is essential for analytical laboratories and R&D departments requiring precise molecular markers for sterol analysis and metabolic pathway studies. It is primarily utilized by the pharmaceutical, nutraceutical, and advanced materials research sectors for method development, quality control, and novel compound synthesis.

Application

• Pharmaceutical Reference Standard: Used for the identification, assay, and impurity profiling of sterol-based active pharmaceutical ingredients (APIs) and excipients.
• Biochemical Research: Acts as a precursor or intermediate in the study of cholesterol biosynthesis, plant sterol metabolism, and membrane biology.
• Analytical Chemistry: Serves as a critical calibration standard for chromatographic methods (HPLC, GC) and spectroscopic analysis in quality control labs.
• Nutraceutical Development: Employed in the research and standardization of plant sterol (phytosterol) supplements and functional food ingredients.
• Material Science: Investigated as a building block for liquid crystals, advanced polymers, and other specialty organic materials.
• Academic & Institutional Research: Provides a well-defined chemical tool for universities and research institutes studying organic synthesis and sterol chemistry.

Basic Information

Product Name	24R-Methylcholest-5-Ene And 24R-Ethylcholest-5-Ene
CAS No.	76866-89-2
Molecular Formula	C28H48O / C29H50O
Molecular Weight	400.69 g/mol / 414.71 g/mol
Synonyms	24R-Methylcholest-5-ene; 24R-Ethylcholest-5-ene; (24R)-24-Methylcholest-5-ene; (24R)-24-Ethylcholest-5-ene; Campest-5-ene (24R isomer); β-Sitost-5-ene (24R isomer); 24R-Alkylcholest-5-ene mixture; Sterol isomer mixture 76866-89-2
EINECS	Contact for details

Quality Control

Our 24R-Methylcholest-5-Ene And 24R-Ethylcholest-5-Ene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and spectroscopic identification, to ensure it meets the high standards required for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, isomeric ratio, and test results is provided with every shipment.

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 under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC, Total)	≥ 98.0%
Isomeric Ratio (24R-Methyl : 24R-Ethyl)	As per customer requirement or typical batch data
Loss on Drying	≤ 0.5%

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