Description

(3S,3'R,6'S)-β,ε-Carotene-3,3'-Diol is a specific, high-purity stereoisomer of the carotenoid pigment lutein. This compound is valued for its precise molecular configuration, which is critical for applications requiring defined biological activity and stability. It serves as a premium-grade reference standard and active ingredient for manufacturers in the nutraceutical, pharmaceutical, and advanced food science sectors seeking superior quality and consistency in their formulations.

Application

• Pharmaceutical Reference Standard: Used as a certified standard for the identification, assay, and purity testing of lutein and related carotenoids in pharmacopeial methods (e.g., USP, EP).
• Nutraceutical Ingredient: Incorporated into high-end dietary supplements targeting eye health, leveraging its specific stereochemistry for optimal bioavailability and efficacy.
• Clinical Research Material: Serves as a key material in preclinical and clinical studies investigating the health benefits of specific carotenoid isomers.
• Food & Beverage Fortification: Used as a colorant and functional nutrient in specialized food products, where its defined structure ensures consistent color and stability.
• Cosmetic & Personal Care: Formulated into skincare products for its antioxidant properties and potential skin health benefits.
• Analytical Chemistry: Employed as a calibration standard in HPLC, LC-MS, and other analytical techniques for accurate quantification of carotenoids in complex matrices.

Basic Information

Product Name	(3S,3'R,6'S)-β,ε-Carotene-3,3'-Diol
CAS No.	105452-20-8
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	(3S,3'R,6'S)-Lutein; (3S,3'R)-Zeaxanthin; all-trans-Lutein; beta,ε-Carotene-3,3'-diol; Xanthophyll; Vegetable lutein; (3R,3'R,6'R)-Lutein (enantiomer); FloraGLO® Lutein (related commercial form)
EINECS	Contact for details

Quality Control

Our (3S,3'R,6'S)-β,ε-Carotene-3,3'-Diol is manufactured under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including chiral HPLC to confirm stereochemical purity and identity. We provide full traceability and Certificates of Analysis (COA) detailing purity, related substances, and residual solvents, ensuring compliance with relevant standards for research and high-grade industrial use.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C (refrigerated) or as specified on the label. The container should be kept in a cool, dry, and well-ventilated area, away from sources of ignition and oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red-orange crystalline powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (total carotenoids as lutein)
Chiral Purity (HPLC)	≥ 98.0% (3S,3'R,6'S)-isomer
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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