Description

Zeinoxanthin is a naturally occurring xanthophyll carotenoid, structurally related to lutein, and is a key isomer of zeaxanthin. This compound is valued for its potent antioxidant properties and its specific role in human ocular health, particularly in the macula of the retina. It is primarily utilized by manufacturers in the nutraceutical, dietary supplement, and functional food industries seeking to formulate advanced eye health and antioxidant products.

Application

• Nutraceutical & Dietary Supplements: A critical ingredient in formulations targeting age-related macular degeneration (AMD) and overall visual function support.
• Functional Foods & Beverages: Incorporated into health-focused products like fortified juices, dairy alternatives, and snack bars to enhance their antioxidant profile.
• Cosmeceuticals: Used in premium skincare and anti-aging formulations for its ability to protect skin cells from oxidative stress induced by UV and blue light.
• Animal Nutrition: Added to feed for poultry (e.g., broilers and laying hens) to improve yolk color and for aquaculture to enhance the pigmentation of fish and shrimp.
• Pharmaceutical Research: Serves as a reference standard and active pharmaceutical ingredient (API) in clinical studies focused on carotenoid metabolism and ocular therapeutics.
• Food Colorant: Provides a stable yellow to orange hue in various food products where synthetic colorants are undesirable.

Basic Information

Product Name	Zeinoxanthin
CAS No.	472-69-5
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	(3R,3'S)-Zeaxanthin; (3R,3'S)-β,β-Carotene-3,3'-diol; allo-Lutein; allo-Lutein (6R-Isomer); meso-Zeaxanthin; Zeinoxanthol; (R,S)-Zeaxanthin; 3'-epi-Lutein
EINECS	207-449-3

Quality Control

Our Zeinoxanthin is produced and tested under strict quality management systems. We ensure compliance with relevant standards for nutraceutical and food-grade ingredients. Comprehensive testing includes identity, purity, and impurity profiling. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your regulatory and quality assurance needs.

Storage

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

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0%
All-trans Isomer Content	≥ 90.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Solvent Residues	Meets ICH guidelines
Total Aerobic Microbial Count	≤ 1000 CFU/g
Yeast & Mold	≤ 100 CFU/g

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