Description

(24R)-Methylcholest-4-Ene And (24R)-Ethylcholest-4-Ene is a high-purity mixture of specific C-24 alkylated cholest-4-ene isomers, serving as a critical intermediate and reference standard in advanced organic synthesis. This compound is essential for researchers and manufacturers requiring precise steroidal building blocks with defined stereochemistry for the development of novel bioactive molecules. It is primarily utilized in pharmaceutical R&D, fine chemical synthesis, and as a standard in analytical laboratories for method development and quality control.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel steroid-based therapeutics and active pharmaceutical ingredients (APIs).
• Reference Standard: Used in analytical chemistry for HPLC, GC-MS, and NMR method development, calibration, and compound identification.
• Biochemical Research: Serves as a precursor or analog in studies of cholesterol metabolism, membrane biology, and steroid hormone pathways.
• Fine Chemical Synthesis: Employed in the multi-step synthesis of complex natural products and specialty chemicals requiring specific steroidal frameworks.
• Material Science: Potential intermediate for creating specialized liquid crystals or advanced organic materials with specific structural properties.

Basic Information

Product Name	(24R)-Methylcholest-4-Ene And (24R)-Ethylcholest-4-Ene
CAS No.	79897-60-2
Molecular Formula	C28H48 / C29H50
Molecular Weight	384.68 g/mol / 398.71 g/mol
Synonyms	(24R)-24-Methylcholest-4-ene; (24R)-24-Ethylcholest-4-ene; 24R-Methylcholest-4-ene; 24R-Ethylcholest-4-ene; (24R)-Methyl-δ4-cholestene; (24R)-Ethyl-δ4-cholestene; Sterol intermediate S4; Cholest-4-ene derivative mix
EINECS	Contact for details

Quality Control

Our (24R)-Methylcholest-4-Ene And (24R)-Ethylcholest-4-Ene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and isomer ratio, GC-MS, and NMR for structural confirmation, to ensure it meets the high standards required for research and synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting identity, purity, and relevant physical data.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. This material is light-sensitive and easily oxidized; prolonged exposure to air, light, or elevated temperatures should be avoided to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Total of both isomers)
Isomer Ratio (GC/HPLC)	Specified on COA
Loss on Drying	≤ 0.5%

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