Description

(18α,19α)-5α-Ursane CAS NO 25375-17-1 is a high-purity pentacyclic triterpenoid compound belonging to the ursane class, serving as a critical intermediate and reference standard in advanced chemical synthesis. Its defined stereochemistry and rigid molecular framework make it an invaluable building block for pharmaceutical research and fine chemical manufacturing. This compound is primarily utilized by R&D laboratories and production facilities in the pharmaceutical, nutraceutical, and specialty chemical industries seeking high-quality chiral precursors.

Application

• Pharmaceutical Intermediate: Serves as a key chiral precursor in the synthesis of bioactive triterpenoids and steroid analogs for drug discovery programs.
• Reference Standard: Used as a high-purity analytical standard in quality control laboratories for method development and compound identification via HPLC, GC-MS, or NMR.
• Natural Product Synthesis: Acts as a foundational scaffold for the semi-synthesis of complex natural products derived from ursolic acid and related compounds.
• Biochemical Research: Employed in studies investigating the structure-activity relationships (SAR) of triterpenoids and their interactions with biological targets.
• Fine Chemical Production: Utilized in the manufacture of specialty chemicals where a specific, high-purity ursane skeleton is required for downstream reactions.

Basic Information

Product Name	(18α,19α)-5α-Ursane
CAS No.	25375-17-1
Molecular Formula	C30H52
Molecular Weight	412.74 g/mol
Synonyms	5α-Ursane; Ursane; (18α,19α)-Ursane; Allo-ursane; 5α-Ursan; 5α-Urs-12-ene (parent hydrocarbon); 5α,18α,19α-Ursane; Triterpene hydrocarbon C30H52
EINECS	Contact for details

Quality Control

Our (18α,19α)-5α-Ursane is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatographic purity assays and structural confirmation. A Certificate of Analysis (COA) detailing specific results for identity, purity, and related substances is provided with every shipment to support your quality and regulatory requirements.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.