Description

cis-7-Octadecenoic Acid Methyl Ester is a high-purity fatty acid methyl ester (FAME) characterized by a specific cis-configuration at the 7th carbon. This precise molecular structure makes it a valuable intermediate and reference standard for advanced chemical synthesis and analytical applications. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require defined, high-quality lipid components for product development and quality control.

Application

• Pharmaceutical Intermediate: Serves as a key chiral building block for synthesizing bioactive molecules and active pharmaceutical ingredients (APIs).
• Analytical Reference Standard: Used in gas chromatography (GC) and mass spectrometry (MS) for the identification and quantification of fatty acid profiles in complex matrices.
• Specialty Chemical Synthesis: Acts as a precursor for producing surfactants, lubricant additives, and other oleochemical derivatives with tailored properties.
• Agrochemical Formulations: Employed in the research and development of advanced crop protection agents and adjuvants.
• Biochemical Research: Utilized in lipidomics studies and metabolic pathway research to understand lipid functions.
• Polymer Modification: Functions as a monomer or plasticizer in the development of specialized polymeric materials.

Basic Information

Product Name	cis-7-Octadecenoic Acid Methyl Ester
CAS No.	2278-59-3
Molecular Formula	C₁₉H₃₆O₂
Molecular Weight	296.49 g/mol
Synonyms	Methyl cis-7-Octadecenoate; Methyl (Z)-7-Octadecenoate; 7-cis-Octadecenoic Acid Methyl Ester; (Z)-7-Octadecenoic Acid Methyl Ester; Methyl Vaccenate (common name for the 11-isomer, sometimes used interchangeably); C18:1 n-11 Methyl Ester; Fatty Acid Methyl Ester C18:1 (δ7); Methyl oleate isomer (δ7)
EINECS	218-904-5

Quality Control

Every batch of cis-7-Octadecenoic Acid Methyl Ester is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets your precise requirements for identity, purity, and isomer specificity. A detailed Certificate of Analysis (COA) including results from GC, GC-MS, and NMR is available for each lot upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area. Recommended long-term storage temperature is 2-8°C to minimize oxidation and maintain stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Isomeric Purity (cis-7)	≥ 90.0%
Acid Value	≤ 1.0 mg KOH/g
Peroxide Value	≤ 5.0 meq/kg
Water Content (KF)	≤ 0.1%

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