Description

Octadecylmethylsulfide is a high-purity, long-chain alkyl sulfide compound, identified by CAS NO 40289-98-3. This specialty chemical serves as a critical intermediate and functional additive, valued for its sulfur-containing functional group which imparts unique chemical reactivity and surface-active properties. It is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and advanced materials sectors seeking to develop novel compounds or enhance product performance.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug candidates requiring sulfur-based functionalization.
• Agrochemical Synthesis: Acts as a key building block for producing pesticides, herbicides, and plant growth regulators.
• Lubricant & Fuel Additive: Functions as an extreme pressure (EP) additive and anti-wear agent in industrial lubricants and specialty fuels.
• Surface Modifier & Coupling Agent: Employed to modify surface properties of materials, including polymers and inorganic fillers, to improve compatibility and performance.
• Chemical Research & Development: Serves as a versatile reagent in organic synthesis for introducing the octadecylmethylsulfide moiety into target molecules.
• Flavor & Fragrance Industry: Utilized as a precursor in the synthesis of specific sulfur-containing aroma compounds.

Basic Information

Item	Details
Product Name	Octadecylmethylsulfide
CAS No.	40289-98-3
Molecular Formula	C₁₉H₄₀S
Molecular Weight	300.59 g/mol
Synonyms	Methyl octadecyl sulfide; 1-(Methylthio)octadecane; n-Octadecyl methyl sulfide; Stearyl methyl sulfide; Octadecyl methyl thioether; C18-Alkyl methyl sulfide; Methyl stearyl sulfide; Octadecanethiol, methyl derivative
EINECS	254-879-4

Quality Control

Our Octadecylmethylsulfide is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all relevant specifications are provided and can be tailored to meet specific customer or regulatory requirements.

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.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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