Description

Alpha Alpha Alpha 24R-Methylcholest-3-Ene And Alpha Alpha Alpha 24R-Ethylcholest-3-Ene is a high-purity, defined mixture of two closely related steroidal alkene isomers. This compound serves as a critical advanced intermediate or reference standard in the synthesis and analytical characterization of complex steroid derivatives. It is essential for pharmaceutical R&D, academic research, and fine chemical manufacturing where precise structural analogs are required for biological activity studies or process development.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel steroid-based drug candidates targeting hormonal receptors or metabolic pathways.
• Research Chemical: Used as a reference standard or starting material in academic and industrial laboratories for studying steroid chemistry and biochemistry.
• Fine Chemical Synthesis: Intermediate in the multi-step production of specialized sterols, vitamins (e.g., Vitamin D analogs), or other high-value chiral molecules.
• Analytical Standard: Serves as a certified reference material (CRM) for method development and quality control in HPLC, GC-MS, or NMR analysis of steroidal compounds.
• Biochemical Research: Probe for investigating enzyme mechanisms (e.g., sterol methyltransferase activity) or membrane biophysics due to its modified sterol structure.

Basic Information

Product Name	Alpha Alpha Alpha 24R-Methylcholest-3-Ene And Alpha Alpha Alpha 24R-Ethylcholest-3-Ene
CAS No.	376372-00-8
Molecular Formula	C28H48 / C29H50 (Mixture)
Molecular Weight	384.69 / 398.72 (Mixture)
Synonyms	(24R)-24-Methylcholest-3-ene; (24R)-24-Ethylcholest-3-ene; 24R-Methylcholest-3-ene; 24R-Ethylcholest-3-ene; Sterol alkene mixture; Cholestene derivative; CAS 376372-00-8; 3-Cholestene, 24-alkyl substituted isomers
EINECS	Contact for details

Quality Control

Our production of this steroidal intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and high chemical purity. Identity and composition are confirmed by advanced spectroscopic methods (NMR, MS). Certificates of Analysis (COA) detailing purity, isomer ratio, and impurity profiles are provided with each shipment to support your quality and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 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 solid
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.