Description

(3R,3'R,6'S)-β,ε-Carotene-3,3'-Diol CAS NO 97169-07-8 is a specific, high-purity stereoisomer of zeaxanthin, a vital xanthophyll carotenoid. This compound matters for its potent antioxidant properties and role as a primary macular pigment, directly supporting eye health and visual function. It is critically needed by manufacturers in the nutraceutical, pharmaceutical, and functional food industries seeking standardized, bioavailable ingredients for vision support formulations.

Application

• Dietary Supplements: A key active ingredient in eye health and vision support capsules, tablets, and softgels.
• Functional Foods & Beverages: Fortification of products designed to promote macular health, such as health drinks and nutritional bars.
• Pharmaceutical Intermediates: Serves as a high-purity starting material or reference standard for ophthalmic drug development and research.
• Clinical Nutrition: Used in medical food formulations targeting age-related macular degeneration (AMD) and other ocular conditions.
• Cosmeceuticals: Incorporated into skincare products for its antioxidant benefits, helping to protect skin from oxidative stress.
• Animal Nutrition: Added to feed for poultry to enhance yolk color and for aquaculture to improve flesh pigmentation and health.

Basic Information

Product Name	(3R,3'R,6'S)-β,ε-Carotene-3,3'-Diol
CAS No.	97169-07-8
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	Zeaxanthin (3R,3'R,6'S-isomer); (3R,3'R,6'S)-Zeaxanthin; all-trans-Zeaxanthin; (3R,3'R)-β,ε-Carotene-3,3'-diol; Lutein isomer; Xanthophyll; Food Color E161h; OccuPure® (branded ingredient)
EINECS	Contact for details

Quality Control

Our (3R,3'R,6'S)-Zeaxanthin is produced under strict quality management systems. Each batch is tested to ensure high purity and compliance with relevant standards for nutraceutical and food-grade ingredients. A comprehensive Certificate of Analysis (COA) detailing identity, potency, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or under inert atmosphere for long-term stability, as the compound is easily oxidized and light-sensitive. Keep away from strong oxidizers.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0% (as total Zeaxanthin isomers)
Specific Isomer Content	≥ 90.0% (3R,3'R,6'S)-Zeaxanthin
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Solvent Residues	Meets ICH guidelines

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