Description

Octadecylmethanesulfonate is a high-purity, long-chain alkyl methanesulfonate ester, a versatile intermediate in advanced organic synthesis. Its primary value lies in its role as a key alkylating agent and hydrophobic building block, enabling the introduction of a C18 alkyl chain into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for synthesizing surfactants, phase-transfer catalysts, and lipid-like molecules.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs requiring lipophilic modification for enhanced bioavailability.
• Agrochemical Synthesis: Serves as a key reagent for producing herbicides, fungicides, and plant growth regulators with tailored hydrophobic properties.
• Surfactant & Detergent Manufacturing: Acts as a precursor for anionic and nonionic surfactants, contributing to foam stability and emulsification in industrial and consumer products.
• Phase-Transfer Catalyst (PTC): Employed in the preparation of quaternary ammonium salts used as catalysts in biphasic reaction systems.
• Polymer Modification: Utilized to alkylate polymers or as a comonomer to impart hydrophobicity and alter material properties.
• Research & Development: A valuable tool in organic chemistry R&D for structure-activity relationship (SAR) studies and novel compound library synthesis.
• Lubricant & Fuel Additive Precursor: Used in formulating additives that improve lubricity, corrosion inhibition, and stability.

Basic Information

Product Name	Octadecylmethanesulfonate
CAS No.	31081-59-1
Molecular Formula	C₁₉H₄₀O₃S
Molecular Weight	348.59 g/mol
Synonyms	Stearyl methanesulfonate; n-Octadecyl methanesulfonate; Methanesulfonic acid octadecyl ester; Octadecyl methanesulphonate; Stearyl mesylate; C18-Mesylate; 1-Octadecanol methanesulfonate; Octadecan-1-yl methanesulfonate
EINECS	Contact for details

Quality Control

Our Octadecylmethanesulfonate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing specific results for purity, appearance, and other critical parameters is provided with every shipment to guarantee traceability and consistency.

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, strong bases, and heat sources. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or waxy solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	40 - 50 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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