Description

Trans,trans-9,11-Octadecadienoic acid is a specific geometric isomer of linoleic acid, a key unsaturated fatty acid. This compound is valued for its defined chemical structure, which is crucial for research and development in lipid chemistry and material science. It serves as a high-purity reference standard and a specialized building block for industries including pharmaceuticals, advanced materials, and nutritional biochemistry.

Application

• Pharmaceutical Research: Used as a reference standard and analytical reagent for studying lipid metabolism, inflammation pathways, and drug-lipid interactions.
• Biochemical Studies: Acts as a precursor or substrate in enzymatic studies and for the synthesis of specialized lipid mediators and signaling molecules.
• Material Science: Serves as a monomer or chemical intermediate for creating polymers, coatings, or surfactants with specific properties derived from its unsaturated backbone.
• Nutritional Science: Employed in research to investigate the effects of specific fatty acid isomers on health, metabolism, and cellular function.
• Cosmetic & Personal Care R&D: Used in the formulation and testing of advanced skincare products targeting skin barrier function and lipid restoration.
• Industrial Chemistry: Functions as a chemical intermediate for synthesizing lubricants, plasticizers, or other oleochemical derivatives.

Basic Information

Product Name	Trans,trans-9,11-Octadecadienoic acid
CAS No.	544-71-8
Molecular Formula	C18H32O2
Molecular Weight	280.45 g/mol
Synonyms	(9E,11E)-9,11-Octadecadienoic acid; trans,trans-9,11-Linoleic acid; (E,E)-9,11-Octadecadienoic acid; 9,11-Linoleic acid; Rumenic acid (trans-9,cis-11 isomer is more common); 9E,11E-Octadecadienoic acid; Linolelaidic acid (often refers to trans-9,trans-12 isomer); C18:2 (9E,11E)
EINECS	208-868-5

Quality Control

Our Trans,trans-9,11-Octadecadienoic acid is produced and handled under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC and GC analysis, to ensure high purity and confirm identity. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your research or production requirements.

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 2-8°C. This product is easily oxidized; avoid exposure to air, heat, and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (GC)	≥ 90.0% (sum of isomers)
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Residual Solvents	Complies with ICH guidelines

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