Description

9(Z),12(E)-Octadecadienoic Acid Methyl Ester is a specific geometric isomer of linoleic acid methyl ester, a key fatty acid derivative. This compound is valued for its defined stereochemistry, which is critical in research and synthesis where the precise configuration of double bonds influences biological activity and material properties. It serves as a vital intermediate and analytical standard for researchers and manufacturers in the pharmaceutical, nutritional, and specialty chemical industries.

Application

• Pharmaceutical Research Intermediate: Used in the synthesis of bioactive molecules, prostaglandins, and other lipid mediators where specific double bond geometry is required.
• Nutritional Science & Analytical Standard: Acts as a high-purity reference standard in gas chromatography (GC) and mass spectrometry (MS) for analyzing fatty acid profiles in foods, oils, and biological samples.
• Biochemical Studies: Employed in lipidomics research to study cell membrane structure, lipid signaling pathways, and metabolic disorders.
• Specialty Chemical Synthesis: Serves as a building block for producing surfactants, lubricant additives, and polymers with tailored properties.
• Cosmetic & Personal Care Ingredients: Used in the development of specialized emollients and skin-care actives derived from specific fatty acid structures.

Basic Information

Product Name	9(Z),12(E)-Octadecadienoic Acid Methyl Ester
CAS No.	20221-26-5
Molecular Formula	C₁₉H₃₄O₂
Molecular Weight	294.47 g/mol
Synonyms	Methyl (9Z,12E)-octadeca-9,12-dienoate; (9Z,12E)-Linoleic Acid Methyl Ester; Methyl cis-9,trans-12-Octadecadienoate; Linoleic Acid Methyl Ester (9Z,12E isomer); 9-cis,12-trans-Octadecadienoic Acid Methyl Ester; FAMEs Standard (C18:2 c9,t12); Methyl (Z,E)-Linoleate
EINECS	243-627-6

Quality Control

Our 9(Z),12(E)-Octadecadienoic Acid Methyl Ester is produced and handled under a strict quality management system. Each batch is analyzed to ensure high chemical and isomeric purity, with testing typically including identity confirmation by FT-IR and GC-MS, assay by GC-FID, and checks for related substances. A comprehensive Certificate of Analysis (COA) detailing all test results 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. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and oxidizing agents. For long-term storage under inert atmosphere (nitrogen or argon), please contact us.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Area %)
Isomeric Purity (9Z,12E)	≥ 90.0% (of total C18:2)
Water Content (KF)	≤ 0.5%

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