Description

Stigmast-24(28)-En-3-One, (5Alpha)- is a high-purity steroidal ketone compound with the CAS number 55123-75-6. This specialized phytosterol derivative serves as a critical intermediate in advanced organic synthesis and pharmaceutical research. It is essential for researchers and manufacturers in the pharmaceutical, nutraceutical, and fine chemical industries who require high-quality, well-characterized building blocks for developing active pharmaceutical ingredients (APIs) and other bioactive molecules.

Application

• Pharmaceutical Intermediate: A key chiral building block for the synthesis of complex steroidal drugs and hormone analogs.
• Biochemical Research: Used as a reference standard or precursor in metabolic pathway studies and enzyme inhibition assays.
• Nutraceutical Development: Serves as a starting material for the semi-synthesis of novel plant sterol derivatives with potential health benefits.
• Fine Chemical Synthesis: Employed in the production of specialty chemicals, including fragrances and advanced materials, where its specific steroidal skeleton is required.
• Academic & Industrial R&D: Utilized in laboratories for method development, structure-activity relationship (SAR) studies, and exploring new synthetic routes.

Basic Information

Product Name	Stigmast-24(28)-En-3-One, (5Alpha)-
CAS No.	55123-75-6
Molecular Formula	C₂₉H₄₈O
Molecular Weight	412.70 g/mol
Synonyms	(5α)-Stigmast-24(28)-en-3-one; 5α-Stigmast-24(28)-en-3-one; 24-Methylene-5α-cholestan-3-one; 24-Methylene-5α-cholestan-3-one; 24-Methylenelophenone; 24-Methylene-5α-lophenone; Fucosterol-3-one (5α-); 5α-Stigmasta-24(28)-en-3-one
EINECS	Contact for details

Quality Control

Our Stigmast-24(28)-En-3-One, (5Alpha)- is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available for all shipments. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliable supply for critical research and production.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep the container tightly sealed to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Melting Point	Specified range provided on COA
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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