Description

(3R,3'R,6'R,9'-Cis)-B,E-Carotene-3,3'-Diol CAS NO 79516-56-6 is a specific, high-purity stereoisomer of zeaxanthin, a vital xanthophyll carotenoid. This compound is valued for its potent antioxidant properties and its role as a key component of the macular pigment in the human eye. It is essential for manufacturers in the nutraceutical, pharmaceutical, and functional food industries seeking to develop premium-grade vision health and antioxidant formulations. Our supply ensures consistent quality and purity for critical B2B applications.

Application

• Dietary Supplements & Nutraceuticals: A primary active ingredient in vision support formulas, particularly those targeting Age-Related Macular Degeneration (AMD) and blue light protection.
• Functional Food & Beverage Fortification: Used to enhance the nutritional profile of health-focused foods and drinks with a scientifically-backed carotenoid.
• Pharmaceutical Intermediates: Serves as a high-purity starting material or reference standard in ophthalmic drug research and development.
• Cosmeceuticals & Skincare: Incorporated into topical formulations for its antioxidant benefits, helping to protect skin from oxidative stress.
• Animal Nutrition: Used in feed additives for poultry to enhance egg yolk pigmentation and for aquaculture to improve flesh color and health.
• Clinical Research Materials: Supplied as a characterized compound for biochemical studies, clinical trials, and analytical method development.

Basic Information

Item	Detail
Product Name	(3R,3'R,6'R,9'-Cis)-B,E-Carotene-3,3'-Diol
CAS No.	79516-56-6
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	Zeaxanthin ((3R,3'R)-all-E- isomer); (3R,3'R)-Zeaxanthin; all-E-Zeaxanthin; (3R,3'R)-β,β-Carotene-3,3'-diol; Lutein stereoisomer; Food Orange 8; CI 75135; E161h
EINECS	Contact for details

Quality Control

Every batch of our (3R,3'R,6'R,9'-Cis)-B,E-Carotene-3,3'-Diol is produced and tested under strict quality management systems. We ensure compliance with relevant standards for nutraceutical and research applications. Comprehensive testing includes identity confirmation, purity assay, and impurity profiling. Certificates of Analysis (COA) documenting batch-specific results are provided to guarantee traceability and meet your regulatory requirements.

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. For long-term stability, keep the product in a cool, dry place away from oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥95.0% (Total Zeaxanthin Isomers)
Specific Isomer Content (HPLC)	≥90.0% ((3R,3'R,6'R,9'-Cis)-isomer)
Loss on Drying	≤2.0%
Residue on Ignition	≤0.5%
Heavy Metals (as Pb)	≤20 ppm
Solvent Residues (GC)	Meets ICH guidelines

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