Description

Withanolide B(P)(New) is a high-purity, standardized phytochemical reference standard. This compound is valued for its role as a key analytical marker and active research compound in the study of withanolides, a class of bioactive steroidal lactones. It is primarily required by pharmaceutical R&D laboratories, nutraceutical manufacturers, and academic research institutions for quality control, bioactivity studies, and the development of new therapeutic agents.

Application

• Pharmaceutical Reference Standard: Used as a primary standard in HPLC and LC-MS methods for the identification and quantification of withanolides in raw materials and finished products.
• Bioactivity and Pharmacological Research: Serves as a key compound for in-vitro and in-vivo studies investigating anti-inflammatory, anti-cancer, immunomodulatory, and neuroprotective properties.
• Nutraceutical Standardization: Employed to standardize and authenticate herbal extracts, particularly from Withania somnifera (Ashwagandha), ensuring consistent potency and quality.
• Analytical Method Development: Critical for developing and validating new analytical protocols in quality control laboratories for natural product analysis.
• Chemical Synthesis & Derivative Studies: Acts as a starting material or benchmark for the semi-synthesis of novel withanolide analogs with potentially enhanced bioactivity.

Basic Information

Product Name	Withanolide B(P)(New)
CAS No.	56973-41-2
Molecular Formula	C28H38O6
Molecular Weight	470.60 g/mol
Synonyms	Withanolide B; (22R)-5,6:22,26-Diepoxy-4,27-dihydroxy-1-oxoergosta-2,24-dien-26-oate; Withaferin A 27-hydroxy derivative; 27-Hydroxywithaferin A; Ashwagandha lactone B; (22R)-5,6:22,26-Diepoxy-4,27-dihydroxyergosta-2,24-dien-1,26-dione
EINECS	Contact for details

Quality Control

Our Withanolide B(P)(New) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods (IR, NMR, MS). We provide a comprehensive Certificate of Analysis (COA) with each shipment, detailing all test results against established specifications to ensure compliance with research and development standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C. This product is hygroscopic (moisture-sensitive) and should be handled in a low-humidity environment to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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