Description

Stearidonic Acid CAS NO 20290-75-9 is a long-chain ω-3 fatty acid, specifically an 18-carbon fatty acid with four double bonds. This compound is a critical biosynthetic intermediate in the production of eicosapentaenoic acid (EPA) and is valued for its potent anti-inflammatory properties and superior bioavailability compared to shorter-chain ω-3s. It serves as a high-value ingredient for manufacturers in the nutraceutical, pharmaceutical, and functional food industries seeking to develop advanced health and wellness products.

Application

• Nutraceutical & Dietary Supplements: As a key active ingredient in ω-3 supplements targeting cardiovascular health, cognitive function, and inflammatory response.
• Pharmaceutical Research & Development: Used as a reference standard and as a starting material for synthesizing longer-chain polyunsaturated fatty acids (PUFAs) in drug discovery.
• Functional Food & Beverage Fortification: Incorporated into foods and drinks, such as dairy alternatives, juices, and baked goods, to enhance their nutritional profile.
• Infant Formula: As a vital nutritional additive to support brain and visual development, mimicking the fatty acid composition of breast milk.
• Cosmeceuticals: Formulated into topical skincare products for its anti-inflammatory and skin-barrier repairing benefits.
• Animal & Aquaculture Feed: Used as a feed additive to improve the health and ω-3 content of livestock and farmed fish.
• Biochemical Research: Employed in cell culture studies and metabolic pathway analysis related to lipidomics and inflammation.

Basic Information

Product Name	Stearidonic Acid
CAS No.	20290-75-9
Molecular Formula	C₁₈H₂₈O₂
Molecular Weight	276.41 g/mol
Synonyms	Moroctic Acid; (6Z,9Z,12Z,15Z)-6,9,12,15-Octadecatetraenoic Acid; SDA; 18:4 n-3; 18:4 ω-3; all-cis-6,9,12,15-Octadecatetraenoic Acid; Octadeca-6,9,12,15-tetraenoic Acid
EINECS	243-693-1

Quality Control

Our Stearidonic Acid is produced and tested under strict quality management systems. Each batch is analyzed to ensure high purity and consistency, meeting the stringent requirements for research and commercial use. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee full traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store under an inert atmosphere (e.g., nitrogen or argon) at -20°C or below. Under these conditions, the product is typically stable for two years. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow oil
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Peroxide Value	≤ 5.0 meq/kg
Heavy Metals	≤ 10 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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