Description

(3S,3'S,5R,5'R)-3,3'-Dihydroxy-.Kappa.,.Kappa.-Carotene-6,6'-Dione is a high-purity, naturally derived carotenoid pigment and potent antioxidant. This compound is valued for its vibrant color and significant biological activity, making it a critical ingredient in premium formulations. It is primarily sought by manufacturers in the nutraceutical, cosmetic, and high-end food and beverage industries for its functional and coloring properties.

Application

• Nutraceutical & Dietary Supplements: Used as an active ingredient in antioxidant formulas, vision health supplements, and general wellness products.
• Cosmetics & Personal Care: Incorporated into anti-aging serums, creams, and lotions for its skin-protective benefits and as a natural colorant.
• Functional Food & Beverage Fortification: Serves as a natural colorant and functional additive in health-focused drinks, dairy products, and confectionery.
• Pharmaceutical Intermediates: Employed in the synthesis of specialized pharmaceutical compounds targeting oxidative stress.
• Animal Nutrition: Added to feed for aquaculture (e.g., salmon, shrimp) and poultry to enhance natural coloration and health.
• Research & Development: Used as a reference standard and biochemical reagent in life science and nutritional research.

Basic Information

Item	Detail
Product Name	(3S,3'S,5R,5'R)-3,3'-Dihydroxy-.Kappa.,.Kappa.-Carotene-6,6'-Dione
CAS No.	470-38-2
Molecular Formula	C₄₀H₅₂O₄
Molecular Weight	596.85 g/mol
Synonyms	Astaxanthin; Astaxanthin (3S,3'S); 3,3'-Dihydroxy-β,β-carotene-4,4'-dione; (3S,3'S)-Astaxanthin; Natural Astaxanthin; CI 40800; Ovoester; Microalgae Astaxanthin
EINECS	207-451-4

Quality Control

Our (3S,3'S,5R,5'R)-3,3'-Dihydroxy-.Kappa.,.Kappa.-Carotene-6,6'-Dione is produced and tested under strict quality management systems. Each batch is analyzed to ensure it meets high-purity standards suitable for nutraceutical and cosmetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, isomer profile, and impurity limits is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) at 2-8°C. This product is strictly light-sensitive and easily oxidized; prolonged exposure to air, light, or elevated temperatures should be avoided to maintain stability and potency.

Specification

Item	Specification
Appearance	Dark red to violet crystalline powder
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0% (Total Astaxanthin)
Isomer Content (3S,3'S)	≥ 98.0% of total Astaxanthin
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Total Plate 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.