Description

Methanesulfonic Acid 2-Methylphenyl Ester is a specialized organic ester of methanesulfonic acid, also known as o-Tolyl methanesulfonate. This high-purity intermediate is valued for its role as an effective alkylating agent and protecting group in complex synthetic pathways. It is primarily sought by pharmaceutical, agrochemical, and advanced material research sectors for the synthesis of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly where selective methylation or sulfonate ester chemistry is required.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Organic Synthesis Reagent: Acts as an alkylating agent or a protecting group for alcohols and phenols in multi-step laboratory and industrial syntheses.
• Material Science Research: Employed in the development of specialty polymers, liquid crystals, and other advanced organic materials.
• Chemical Research & Development: A versatile tool for method development and scale-up processes in fine chemical manufacturing.

Basic Information

Product Name	Methanesulfonic Acid 2-Methylphenyl Ester
CAS No.	1009-01-4
Molecular Formula	C8H10O3S
Molecular Weight	186.23 g/mol
Synonyms	o-Tolyl methanesulfonate; 2-Methylphenyl methanesulfonate; (2-Methylphenyl) methanesulfonate; Methanesulfonic acid o-tolyl ester; o-Tolyl mesylate; 2-Tolyl methanesulfonate; Methylphenyl methanesulphonate; Mesylic acid 2-methylphenyl ester
EINECS	213-775-7

Quality Control

Our Methanesulfonic Acid 2-Methylphenyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) with detailed batch-specific data are available upon request to support your quality and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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