Description

Methanesulfonic Acid 2-Bromoethyl Ester is a specialized organic synthesis intermediate featuring both a reactive bromoethyl group and a mesylate leaving group. This dual functionality makes it a valuable reagent for introducing the 2-bromoethyl moiety into target molecules, enabling alkylation and further derivatization reactions. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a bromoethyl side chain for further cyclization or functionalization.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the 2-bromoethyl group is incorporated into the final active molecule.
• Ligand and Catalyst Preparation: Serves as a precursor for synthesizing specialized ligands and organometallic catalysts used in asymmetric synthesis and cross-coupling reactions.
• Polymer Modification: Employed to introduce reactive bromine sites onto polymer backbones for subsequent grafting or creating functional materials.
• Cross-linking Agent: Can act as a cross-linker in the preparation of specialty resins and polymeric networks.
• Organic Synthesis Reagent: A versatile alkylating agent in nucleophilic substitution reactions for laboratory-scale and pilot-plant chemical synthesis.

Basic Information

Product Name	Methanesulfonic Acid 2-Bromoethyl Ester
CAS No.	4239-10-5
Molecular Formula	C3H7BrO3S
Molecular Weight	203.06 g/mol
Synonyms	2-Bromoethyl methanesulfonate; Ethanol, 2-bromo-, methanesulfonate; 2-Bromoethyl mesylate; Methanesulfonic acid bromoethyl ester; Bromoethyl methanesulfonate; 2-Bromo-1-ethanol methanesulfonate; Mesyloxyethyl bromide; 4239-10-5
EINECS	224-207-8

Quality Control

Our Methanesulfonic Acid 2-Bromoethyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay (HPLC), identity confirmation (IR, NMR), and impurity profiling, to ensure it meets the high-purity standards required for sensitive synthetic applications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability, consistency, and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, open flames, and strong bases. This material is moisture-sensitive; ensure containers are kept tightly sealed 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)	Individual impurity ≤ 0.5%
Total Impurities	≤ 2.0%

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