Description

(18α)-5α-Urs-20-En-3-One CAS NO 862-33-9 is a high-purity steroidal ketone compound belonging to the ursane class of triterpenoids. This specialized intermediate is critical for pharmaceutical research and development, particularly in the synthesis of bioactive molecules and reference standards. It is primarily sought by research institutions, pharmaceutical development laboratories, and fine chemical manufacturers engaged in steroid chemistry and drug discovery programs.

Application

• Pharmaceutical Intermediate: A key building block in the multi-step synthesis of complex steroid-based active pharmaceutical ingredients (APIs).
• Reference Standard: Used as a high-purity analytical standard in quality control (QC) and research laboratories for method development and compound identification.
• Biochemical Research: Serves as a precursor or model compound in studies investigating steroid metabolism, receptor interactions, and biological pathways.
• Fine Chemical Synthesis: Employed in the preparation of derivatives for structure-activity relationship (SAR) studies in medicinal chemistry.
• Academic Research: Utilized in university and institutional labs for chemical education and advanced research in organic and natural product chemistry.

Basic Information

Product Name	(18α)-5α-Urs-20-En-3-One
CAS No.	862-33-9
Molecular Formula	C30H48O
Molecular Weight	424.71 g/mol
Synonyms	5α-Urs-20-en-3-one; 3-Oxours-20-ene; Urs-20-en-3-one; 18α-Urs-20-en-3-one; (18α)-Urs-20-en-3-one; 5α-Ursan-3-one derivative; Triterpenoid ketone
EINECS	Contact for details

Quality Control

Our (18α)-5α-Urs-20-En-3-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and residual solvent analysis. We provide full traceability and detailed Certificates of Analysis (COA) to support your research and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
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.