Description

Phenylmethyl Methanesulfonate is a specialized organic sulfonate ester with significant utility as a key intermediate in advanced chemical synthesis. Its primary value lies in its role as a versatile alkylating and methanesulfonylating agent, enabling the introduction of the benzyl (phenylmethyl) group into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and fine chemical industries, particularly for developing active pharmaceutical ingredients (APIs) and complex organic compounds.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of various active pharmaceutical ingredients (APIs) and drug candidates.
• Alkylating Agent: Used in organic synthesis to transfer the benzyl group to nucleophiles such as alcohols, amines, and thiols.
• Methanesulfonate Ester Precursor: Serves as a precursor or reagent in the preparation of other methanesulfonate (mesylate) esters.
• Fine Chemical Synthesis: Employed in research and production of specialty chemicals, agrochemicals, and performance materials.
• Protecting Group Chemistry: Can be utilized in multi-step synthetic routes for the temporary protection of functional groups.
• Polymer Modification: Potential use in the functionalization of polymers and materials science applications.

Basic Information

Product Name	Phenylmethyl Methanesulfonate
CAS No.	55791-06-5
Molecular Formula	C8H10O3S
Molecular Weight	186.23 g/mol
Synonyms	Benzyl Methanesulfonate; Benzyl Mesylate; Methanesulfonic Acid Benzyl Ester; (Phenylmethyl) Methanesulfonate; α-Tolyl Methanesulfonate; NSC 403914; Benzyl Ester of Methanesulfonic Acid
EINECS	Contact for details

Quality Control

Our Phenylmethyl Methanesulfonate is produced and tested under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including identity confirmation by IR and NMR, and purity determination by GC or HPLC. A Certificate of Analysis (COA) detailing all specifications and test results is available for every batch upon request, supporting your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	≤ 1.0% total

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