Description

α-Doradexanthin is a naturally occurring xanthophyll carotenoid, a key pigment responsible for the vibrant coloration in marine organisms. This high-value compound is prized for its potent antioxidant properties and its role as a critical precursor in the synthesis of astaxanthin. It is essential for manufacturers in the nutraceutical, aquaculture feed, and food colorant industries seeking natural, bioactive ingredients. Our supply ensures consistent quality and purity for demanding commercial and research applications.

Application

• Aquaculture Feed Additive: Used as a pigment source in feed for salmon, trout, and shrimp to enhance flesh coloration (pigmentation).
• Nutraceutical & Dietary Supplements: Formulated into capsules and softgels for its powerful antioxidant and anti-inflammatory benefits.
• Food & Beverage Coloring: Provides a stable, natural yellow-to-orange hue in functional foods, beverages, and confectionery.
• Cosmetic & Skincare Formulations: Incorporated into anti-aging serums and creams for its skin-protective antioxidant activity.
• Pharmaceutical Research: Serves as a reference standard and an active pharmaceutical ingredient (API) intermediate in clinical studies.
• Animal Nutrition: Enhances the yolk color in poultry feed and improves the visual appeal and health of ornamental fish and birds.

Basic Information

Product Name	α-Doradexanthin
CAS No.	29125-77-7
Molecular Formula	C40H56O2
Molecular Weight	568.88 g/mol
Synonyms	α-Doradexanthin; (3S,3'S,5R,6R)-3,3'-Dihydroxy-5,6-epoxy-7',8'-didehydro-β,β-carotene; 5,6-Epoxy-3,3'-dihydroxy-7',8'-didehydro-β,β-carotene; Alloxanthin; Pectenoxanthin; Crustaxanthin
EINECS	Contact for details

Quality Control

Every batch of our α-Doradexanthin is produced and tested under a strict quality management system. We ensure compliance with relevant standards for food-grade and nutraceutical applications. Comprehensive testing includes identity, purity, and impurity profiling. A detailed Certificate of Analysis (COA) is provided with each shipment to guarantee specification adherence.

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 oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Complies with ICH guidelines
Microbiological Analysis	Meets standard plate count limits

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