Description

(2S, 4'R, 8'R)-α-Tocopherol is a specific stereoisomer of α-tocopherol, representing the most biologically active form of Vitamin E. This high-purity compound is critical for applications where precise molecular configuration and maximum potency are required. It is essential for manufacturers in the pharmaceutical, nutraceutical, and premium food fortification industries seeking superior efficacy and stability in their formulations.

Application

• Pharmaceutical Active Ingredient: Used in prescription and over-the-counter formulations for Vitamin E supplementation and therapeutic applications.
• High-Potency Nutraceuticals: A key ingredient in premium dietary supplements, softgel capsules, and multivitamin complexes.
• Functional Food & Beverage Fortification: Added to foods, dairy products, and beverages to enhance nutritional value.
• Cosmetic & Personal Care: Incorporated into anti-aging serums, creams, and lotions for its antioxidant and skin-conditioning properties.
• Animal Feed & Veterinary Products: Used as a vital nutrient in high-performance animal feed and veterinary pharmaceuticals.
• Biochemical & Cell Culture Research: Serves as a critical antioxidant in research media and biochemical studies.

Basic Information

Product Name	(2S, 4'R, 8'R)-α-Tocopherol
CAS No.	18920-63-3
Molecular Formula	C29H50O2
Molecular Weight	430.71 g/mol
Synonyms	d-α-Tocopherol; (R,R,R)-α-Tocopherol; Natural Vitamin E; 2R,4'R,8'R-α-Tocopherol; 5,7,8-Trimethyltocol; (2R,4'R,8'R)-α-Tocopherol; Vitamin E (natural form); EINECS 242-691-4
EINECS	242-691-4

Quality Control

Our (2S, 4'R, 8'R)-α-Tocopherol is produced and tested under strict quality management systems. It meets rigorous standards for identity, purity, and potency, with specifications suitable for pharmaceutical and food-grade applications. A comprehensive Certificate of Analysis (COA) detailing assay, stereoisomeric purity, and impurity profiles is provided with each batch to ensure full traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) in a cool, dry place at 2-8°C for long-term stability. This product is easily oxidized and light-sensitive; prolonged exposure to air, heat, or light should be avoided to maintain potency.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous oil
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 96.0%
Stereoisomeric Purity (HPLC)	≥ 98.0% (2S,4'R,8'R)-isomer
Specific Rotation [α]20/D	+0.20° to +0.30°
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH Q3C guidelines

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