Description

13-cis-Lutein is a specific geometric isomer of lutein, a naturally occurring carotenoid xanthophyll. This compound is valued for its potent antioxidant properties and its role in supporting eye and skin health. It is a critical ingredient for manufacturers in the nutraceutical, dietary supplement, and functional food and beverage industries seeking to formulate science-backed health products.

Application

• Dietary Supplements: A key active ingredient in capsules, softgels, and tablets formulated for vision support and macular health.
• Functional Foods & Beverages: Fortification of health drinks, dairy products, and snack bars to enhance nutritional value with antioxidant benefits.
• Cosmetic & Personal Care: Incorporated into anti-aging serums, creams, and lotions for its skin-protective properties against blue light and environmental stressors.
• Animal Nutrition: Used in feed premixes for poultry to improve egg yolk coloration and for pets to support overall vitality.
• Pharmaceutical Intermediates: Serves as a high-purity starting material or reference standard in pharmaceutical research and development.
• Clinical Research: Utilized as a standard or reagent in studies investigating carotenoid metabolism, bioavailability, and health outcomes.

Basic Information

Product Name	13-cis-Lutein
CAS No.	38327-39-8
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	(3R,3'S,6'R)-beta,ε-Carotene-3,3'-diol; Lutein (13-cis- isomer); all-trans-Lutein isomer; Xanthophyll; Vegetable lutein; CI 75136; Natural Yellow 26; beta,ε-Carotene-3,3'-diol, (3R,3'S,6'R)-
EINECS	Contact for details

Quality Control

Our 13-cis-Lutein is produced and tested under strict quality management systems. We ensure compliance with relevant standards for nutraceutical and food-grade ingredients. Certificates of Analysis (COA) documenting purity, isomer profile, and safety parameters are available for every batch upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) at 2-8°C to minimize oxidation and ensure long-term stability. Keep the container in a cool, dry, and well-ventilated area.

Specification

Item	Specification
Appearance	Orange to red-orange powder or crystals
Identification (HPLC/UV)	Complies
Assay (HPLC)	≥95.0% (Total Lutein Isomers)
13-cis-Lutein Content (HPLC)	≥90.0% of total assay
Solvent Residues (GC)	Meets ICH guidelines
Heavy Metals (as Pb)	≤10 ppm
Loss on Drying	≤1.0%
Total Plate Count	≤1000 cfu/g

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