Description

Methyl p-Toluenesulfinate is a versatile organosulfur compound widely used as a key building block and reagent in advanced organic synthesis. Its primary value lies in its role as a sulfinylating agent and a precursor for generating sulfoxides and other sulfur-containing molecules, enabling the construction of complex chemical architectures. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where precise control over sulfur functionality is critical for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing sulfoxide-containing drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of novel herbicides, fungicides, and insecticides that require specific sulfur-based functional groups.
• Asymmetric Synthesis: Serves as a chiral auxiliary or precursor in stereoselective reactions to create enantiomerically pure compounds.
• Polymer Chemistry: Acts as a monomer or modifying agent for introducing sulfinyl groups into polymers to alter material properties.
• Ligand and Catalyst Preparation: Employed in the synthesis of specialized ligands and organocatalysts for transition metal catalysis.
• Fine Chemical Production: A key reagent for manufacturing dyes, flavors, fragrances, and other high-value specialty chemicals.
• Research & Development: Used in academic and industrial R&D labs for methodological development and exploring new synthetic pathways.

Basic Information

Product Name	Methyl p-Toluenesulfinate
CAS No.	672-78-6
Molecular Formula	C8H10O2S
Molecular Weight	170.23 g/mol
Synonyms	Methyl p-Toluenesulfinate; Methyl 4-Methylbenzenesulfinate; Methyl Tosylsulfinate; p-Tolyl Methyl Sulfoxide (incorrect but common alias); Methyl p-Tolylsulfinate; 4-Methylbenzenesulfinic Acid Methyl Ester; Methyl 4-Toluenesulfinate; TosMIC Sulfoxide Derivative
EINECS	211-595-8

Quality Control

Our Methyl p-Toluenesulfinate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatographic purity analysis and identity confirmation. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, impurity profile, and physical properties. We are committed to meeting the stringent requirements of cGMP and ISO standards for advanced chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flames. This material is moisture-sensitive; ensure containers are kept tightly sealed when not in use to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Specific Gravity (20°C)	1.180 - 1.210
Refractive Index (n20D)	1.520 - 1.540

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