Description

5,5',6,6'-Tetrahydro-5,5'-Dihydroxy-β,β-Carotene-3,3'-Dione is a specialized, high-value carotenoid derivative, a key intermediate in the synthesis of important pigments and bioactive compounds. This compound matters for its role as a precursor in the production of astaxanthin and other xanthophylls, offering a critical building block for manufacturers requiring precise chemical synthesis. It is primarily needed by producers in the nutraceutical, animal feed, and fine chemical industries for developing high-performance colorants and antioxidants.

Application

• Precursor for Astaxanthin Synthesis: A vital intermediate in the chemical and biotechnological production of astaxanthin, a powerful antioxidant used in aquaculture and human supplements.
• Fine Chemical Intermediate: Used in the synthesis of other high-value carotenoids and xanthophylls for research and commercial applications.
• Nutraceutical Formulations: Employed in the development of specialized antioxidant and vitamin-A precursor formulations.
• Animal Feed Additive Production: Serves as a key material for manufacturing pigmenting agents that enhance the color and health of farmed fish and poultry.
• Research & Development: Used in biochemical and pharmaceutical research to study carotenoid metabolism and develop new bioactive molecules.
• Cosmetic Ingredient Synthesis: A starting material for producing carotenoid-based colorants and antioxidants for skincare products.

Basic Information

Item	Details
Product Name	5,5',6,6'-Tetrahydro-5,5'-Dihydroxy-β,β-Carotene-3,3'-Dione
CAS No.	52073-90-2
Molecular Formula	C₄₀H₅₄O₄
Molecular Weight	598.86 g/mol
Synonyms	Dihydroxy-3,3'-diketo-4,4',5,5',6,6'-hexahydro-β,β-carotene; 3,3'-Diketo-4,4',5,5',6,6'-hexahydro-β,β-carotene-5,5'-diol; Astaxanthin precursor; 5,5'-Dihydroxy-3,3'-dioxo-4,4',5,5',6,6'-hexahydro-β,β-carotene; 4,4',5,5',6,6'-Hexahydro-β,β-carotene-3,3'-dione-5,5'-diol; ADH (common abbreviation); 3,3'-Diketo-5,5'-dihydroxyhexahydro-β,β-carotene
EINECS	Contact for details

Quality Control

Our 5,5',6,6'-Tetrahydro-5,5'-Dihydroxy-β,β-Carotene-3,3'-Dione is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis applications. Certificates of Analysis (COA) documenting purity, related substances, and other critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and ensure long-term stability. The container should be kept in a cool, dry, and well-ventilated area, away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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