Description

(3S,3'S)-ε,ε-Carotene-3,3'-Diol CAS NO 63597-83-1 is a high-purity, stereochemically defined xanthophyll carotenoid, a key isomer of zeaxanthin. This compound is valued for its potent antioxidant properties and specific role in human health and nutrition. It is an essential ingredient for manufacturers in the nutraceutical, pharmaceutical, and functional food industries seeking premium-grade, bioavailable ingredients for vision health and oxidative stress management.

Application

• Dietary Supplements & Nutraceuticals: A critical active ingredient in formulations targeting Age-Related Macular Degeneration (AMD) and overall eye health, often combined with lutein.
• Functional Food & Beverage Fortification: Used to enhance the nutritional profile of health drinks, dairy products, and fortified foods with its antioxidant benefits.
• Pharmaceutical Intermediates: Serves as a high-purity starting material or reference standard in the research and development of ophthalmic drugs and therapies.
• Cosmeceuticals: Incorporated into advanced skincare formulations for its protective effects against blue light and environmental oxidative damage.
• Animal Nutrition: Used in premium feed additives for poultry to enhance egg yolk pigmentation and for aquaculture to improve flesh color and health.
• Analytical & Research Standards: Employed as a certified reference material (CRM) in HPLC, LC-MS, and other analytical methods for quality control and clinical studies.

Basic Information

Product Name	(3S,3'S)-ε,ε-Carotene-3,3'-Diol
CAS No.	63597-83-1
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	Zeaxanthin (all-E, 3R,3'R-isomer); (3R,3'R)-Zeaxanthin; all-trans-Zeaxanthin; Anchovyxanthin; Xanthophyll; (3R,3'R)-β,β-Carotene-3,3'-diol; beta,β-Carotene-3,3'-diol; Food Orange 8; CI 75135; E161h
EINECS	Contact for details

Quality Control

Our (3S,3'S)-ε,ε-Carotene-3,3'-Diol is manufactured under strict quality management systems. Each batch is tested to ensure it meets high-purity standards suitable for nutraceutical and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, isomer profile, and impurity limits is provided with every shipment to guarantee traceability and compliance.

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. This product is easily oxidized and light-sensitive; prolonged exposure to air, heat, or light should be avoided to maintain stability and potency.

Specification

Item	Specification
Appearance	Orange to red-orange crystalline powder
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0% (total Zeaxanthin isomers)
Purity (by HPLC Area %)	≥ 98.0%
Specific Rotation	Contact for details
Heavy Metals	< 10 ppm
Residual Solvents (GC)	Meets ICH guidelines
Microbiological Analysis	Meets standard specifications

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