Description

13-cis-Astaxanthin CAS NO 113085-05-5 is a specific geometric isomer of the potent carotenoid antioxidant astaxanthin. This compound matters for applications requiring a defined stereochemical profile, offering superior stability and targeted biological activity compared to astaxanthin mixtures. Industries such as nutraceuticals, aquaculture, and high-end cosmetics seek this isomer for its precise formulation benefits and enhanced efficacy in specialized products.

Application

• Premium Nutraceutical Formulations: Used in high-potency dietary supplements targeting oxidative stress, eye health, and skin vitality due to its specific isomeric profile.
• Aquaculture Feed Additive: Incorporated into specialized feeds for salmon, trout, and shrimp to achieve precise flesh pigmentation and improve survival rates.
• Cosmeceutical Products: A key active ingredient in anti-aging serums, creams, and sun care products for its stable antioxidant and skin-protective properties.
• Pharmaceutical Research: Serves as a reference standard and an active pharmaceutical ingredient (API) in clinical studies exploring inflammation and metabolic health.
• Functional Food & Beverages: Fortified into health drinks, nutritional bars, and dairy products where a specific, stable isomer is required for product integrity.
• Animal Nutrition: Enhances the health, coloration, and reproductive performance of breeding stock in poultry and ornamental fish industries.

Basic Information

Product Name	13-cis-Astaxanthin
CAS No.	113085-05-5
Molecular Formula	C40H52O4
Molecular Weight	596.84 g/mol
Synonyms	(3S,3'S)-13-cis-Astaxanthin; 13Z-Astaxanthin; all-E-Astaxanthin Isomer; Astaxanthin (13-cis-); trans-Astaxanthin Isomer; Carophyll Pink; 3,3'-Dihydroxy-β,β-carotene-4,4'-dione (13-cis-); 113085-05-5
EINECS	Contact for details

Quality Control

Our 13-cis-Astaxanthin is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for isomer-specific purity and identity confirmation, to ensure it meets stringent specifications. Certificates of Analysis (COA) documenting purity, heavy metals, residual solvents, and microbiological limits are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store unopened containers at -20°C or below under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. For daily use, keep the sealed container at 2-8°C in a desiccated environment. This product is easily oxidized and light-sensitive; minimize exposure to air, heat, and light during handling.

Specification

Item	Specification
Appearance	Dark red to violet crystalline powder
Identification (HPLC/UV)	Conforms to reference standard
Assay (HPLC)	≥ 95.0% (Total 13-cis-Astaxanthin)
Isomeric Purity (13-cis)	≥ 98.0% of total astaxanthin
Related Substances (HPLC)	Total other isomers ≤ 2.0%
Loss on Drying	≤ 1.0%
Residual Solvents (GC)	Meets ICH Q3C guidelines
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.