Description

α-Sitosterol is a prominent plant-derived sterol belonging to the class of phytosterols. It serves as a crucial intermediate and active ingredient in the synthesis of steroid hormones and various high-value pharmaceutical compounds. This compound is essential for manufacturers in the pharmaceutical, nutraceutical, and cosmetic industries seeking natural, plant-based raw materials. Its role in supporting cardiovascular and prostate health makes it a key component in dietary supplements and functional foods.

Application

• Pharmaceutical Intermediates: A key starting material for the semi-synthesis of steroid drugs and hormones.
• Dietary Supplements & Nutraceuticals: Formulated into capsules and tablets for its potential to support healthy cholesterol levels and prostate function.
• Functional Food & Beverage Fortification: Added to spreads, dairy products, and drinks for cholesterol-lowering claims.
• Cosmetic & Personal Care: Used in anti-aging creams, lotions, and serums for its skin-conditioning and anti-inflammatory properties.
• Research & Development: Employed as a standard or reagent in biochemical and pharmacological studies.
• Veterinary Pharmaceuticals: Incorporated into animal health products for similar therapeutic benefits.

Basic Information

Product Name	α-Sitosterol
CAS No.	474-40-8
Molecular Formula	C29H50O
Molecular Weight	414.71 g/mol
Synonyms	α-Sitosterol; (3β)-Stigmast-5-en-3-ol; 24α-Ethylcholest-5-en-3β-ol; Cinchol; Cupreol; Quebrachol; Stigmast-5-en-3β-ol; β-Sitosterol (often used interchangeably, though a mixture)
EINECS	207-480-6

Quality Control

Our α-Sitosterol is produced and tested under a strict quality management system. We offer grades suitable for various applications, including those aligned with nutraceutical (FCC) and pharmaceutical (USP/EP) standards. Every batch undergoes comprehensive analytical testing, including HPLC for assay and purity, to ensure identity, potency, and the absence of harmful impurities. A Certificate of Analysis (COA) is provided with each shipment to guarantee traceability and compliance with your specifications.

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). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥95.0% - 102.0%
Melting Point	136°C - 140°C
Specific Rotation	-25° to -38° (c=2, in CHCl3)
Loss on Drying	≤1.0%
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.