Description

(24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane CAS NO 38776-72-6 is a high-purity, specialized sterol derivative mixture, serving as a critical intermediate and reference standard in advanced organic synthesis and analytical research. Its value lies in providing a defined, high-quality chemical scaffold for the development of novel pharmaceutical compounds and bioactive molecules. This product is essential for R&D chemists and process development scientists in the pharmaceutical, biotechnology, and fine chemical industries who require precise, well-characterized building blocks for complex synthesis projects.

Application

• Pharmaceutical Intermediate: Key starting material or advanced intermediate in the synthesis of novel steroid-based therapeutics and drug candidates.
• Reference Standard: Used as a certified reference material (CRM) or analytical standard in HPLC, GC-MS, and NMR for quality control and method validation.
• Biochemical Research: Investigated for its role in studying sterol biosynthesis pathways, membrane biology, and enzyme interactions.
• Fine Chemical Synthesis: A versatile chiral building block for constructing complex natural products and specialty chemicals with sterol backbones.
• Material Science Research: Potential precursor for developing functional organic materials and liquid crystals due to its rigid, multi-ring structure.

Basic Information

Product Name	(24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane
CAS No.	38776-72-6
Molecular Formula	C28H48 (24-Methyl) / C29H50 (24-Ethyl)
Molecular Weight	384.68 g/mol (24-Methyl) / 398.71 g/mol (24-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; Sterol cyclization product; Dihydrosterol derivative
EINECS	Contact for details

Quality Control

Our production of (24R)-24-Methyl-3,5-Cyclocholestane And (24R)-24-Ethyl-3,5-Cyclocholestane adheres to stringent in-house quality protocols to ensure batch-to-batch consistency and high purity. Each lot is fully characterized using advanced analytical techniques including NMR, HPLC, and GC-MS. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment, supporting compliance in GMP-aligned research and development environments.

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
Purity (HPLC)	≥ 95.0% (Total of both isomers)
Isomer Ratio (24-Methyl : 24-Ethyl)	Specified on COA
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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