Description

9-Octadecynoic Acid Methyl Ester is a high-purity fatty acid derivative characterized by its terminal alkyne functional group, making it a valuable synthetic intermediate. This compound is essential for researchers and industrial chemists requiring a long-chain building block for click chemistry, polymer synthesis, and material science applications. It is particularly sought after in the pharmaceutical, agrochemical, and specialty chemical sectors for the development of novel compounds and advanced materials.

Application

• Click Chemistry Intermediate: Serves as a critical substrate for Huisgen cycloaddition (copper-catalyzed azide-alkyne cycloaddition) to create triazole linkages in drug discovery and bioconjugation.
• Polymer Science: Used as a monomer or co-monomer for synthesizing specialty polymers, including polyesters and polyamides with unique hydrophobic or structural properties.
• Organic Synthesis: Acts as a versatile building block for the synthesis of longer-chain fatty acid derivatives, surfactants, and liquid crystals.
• Material Science: Employed in surface modification and the creation of self-assembled monolayers (SAMs) on various substrates.
• Agrochemical Research: Utilized in the development and synthesis of novel active ingredients and formulation additives.
• Lubricant & Fuel Additive Precursor: Investigated for the production of specialized ester-based additives that modify viscosity and performance characteristics.

Basic Information

Product Name	9-Octadecynoic Acid Methyl Ester
CAS No.	1120-32-7
Molecular Formula	C₁₉H₃₄O₂
Molecular Weight	294.47 g/mol
Synonyms	Methyl 9-Octadecynoate; Methyl Stearolate; 9-Octadecynoic Acid Methyl Ester; Methyl 9-Octadecynoate; Methyl octadec-9-ynoate; Stearolic Acid Methyl Ester; 9-Octadecynoic acid, methyl ester
EINECS	214-317-9

Quality Control

Our 9-Octadecynoic Acid Methyl Ester is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopy (IR, NMR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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