Description

Withaphysalin S is a specialized, high-purity natural product compound belonging to the withanolide class of steroidal lactones. This compound is of significant interest for its role as a key reference standard and active research material in the life sciences. It is primarily utilized by pharmaceutical R&D teams, academic researchers, and analytical laboratories engaged in phytochemical and pharmacological studies. The material is supplied under strict quality control to ensure batch-to-batch consistency for critical research applications.

Application

• Pharmaceutical Research & Development: Serves as a high-purity reference standard and lead compound for investigating biological activities, including anti-inflammatory, anti-cancer, and immunomodulatory effects.
• Academic & Institutional Research: Used in universities and research institutes for phytochemical studies, structure-activity relationship (SAR) analysis, and mechanistic studies of withanolides.
• Analytical Chemistry: Employed as a certified reference material (CRM) for method development, validation, and quality control in HPLC, LC-MS, and NMR analyses.
• Natural Product Isolation & Synthesis: Acts as a benchmark for the isolation, purification, and semi-synthetic modification of related withanolide derivatives.
• Biochemical Assays: Utilized as a precise reagent in cell-based and enzyme inhibition assays to screen for specific bioactivities.

Basic Information

Product Name	Withaphysalin S
CAS No.	949172-13-8
Molecular Formula	C28H34O7
Molecular Weight	482.57 g/mol
Synonyms	Withaphysalin S; (22R)-5,6:22,26-Diepoxy-15,20:21,24-disecoergosta-2,24(28)-diene-1,15,20-trione, 4,21:16,17-tetrahydro-14-hydroxy-6-methyl-, (1β,4β,5β,6β,14β,16β,17β)-; Withanolide S; Physalin-related compound S
EINECS	Contact for details

Quality Control

Every batch of Withaphysalin S is produced and analyzed under a strict quality management system. Our products undergo rigorous identity confirmation, purity analysis, and impurity profiling to ensure compliance with research-grade standards. A comprehensive Certificate of Analysis (COA), detailing results from HPLC, NMR, and MS analyses, is provided with each shipment to guarantee traceability and suitability for your application.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store at -20°C or below under an inert atmosphere. The compound is light-sensitive and should be handled under appropriate conditions to prevent degradation. Allow the vial to equilibrate to room temperature in a desiccator before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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