Overview
Docosatrienoic acid (DTA) is a long-chain polyunsaturated fatty acid (PUFA) with 22 carbon atoms and three double bonds. Its structure varies depending on the position of the double bonds (e.g., n-3 or n-6 isomers), which influences its biological activity. DTA is less common than other PUFAs like EPA or DHA but is studied for its potential roles in cellular signaling and metabolic pathways. Though not abundant in natural sources, DTA can be synthesized or isolated from specialized microbial or marine lipids. It is primarily used in academic and industrial research, particularly in lipid biochemistry and nutraceutical development.
Physical and Chemical Properties
DTA is a viscous liquid at room temperature, typically colorless or faintly yellow. Its polyunsaturated structure makes it prone to oxidation, requiring strict storage in airtight containers with antioxidants like BHT. The melting point varies by isomer; for example, n-3 variants remain liquid at lower temperatures than their saturated counterparts. Solubility is limited in polar solvents but high in non-polar organic solvents. Analytical techniques like GC-MS or HPLC are used to identify and quantify DTA isomers. Stability is a key concern—prolonged exposure to air or light degrades the compound, affecting experimental results.
Main Applications
DTA is primarily utilized in biomedical research to study lipid metabolism and inflammation pathways. It serves as a precursor or intermediate in the synthesis of bioactive molecules, including specialized pro-resolving mediators (SPMs). Industrial applications include niche uses in high-value nutraceuticals or functional foods targeting metabolic health. In lipidomics, DTA isomers are analyzed to understand their role in membrane fluidity and cell signaling. Some cosmetic formulations incorporate derivatives of DTA for their potential skin-barrier benefits, though this remains experimental.
Safety and Storage
As a lab chemical, DTA requires careful handling due to its oxidative sensitivity and combustible nature. Storage at -20°C under nitrogen or argon is recommended to prevent degradation. Work should be conducted in a fume hood to minimize inhalation risks, and spills should be contained using inert absorbents. Safety data sheets (SDS) must be reviewed prior to use. Disposal should follow local regulations for organic compounds. For industrial-scale procurement, suppliers often provide stabilized formulations with added antioxidants to extend shelf life.
B2B Procurement Guide
B2B buyers should prioritize suppliers with ISO-certified manufacturing and detailed certificates of analysis (CoA). Key specifications include isomer type (e.g., 22:3n-3), purity (≥95%), and peroxide value (to assess oxidation). Custom synthesis is available for specific isomers but requires longer lead times. Bulk purchases (100g+) may reduce costs by 10–30%, though storage stability must be ensured. Sample testing is advised to confirm compatibility with end-use applications. Major suppliers include specialized fine chemical distributors like Cayman Chemical and Sigma-Aldrich.
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