Description

1-Butanesulfonic Acid Methyl Ester is a versatile alkyl sulfonate ester, a key intermediate in organic synthesis. Its value lies in its role as a sulfonating agent and a building block for introducing the butanesulfonyl moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for the development of surfactants, catalysts, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs requiring sulfonate ester functionalities.
• Agrochemical Synthesis: Serves as a key building block for creating novel herbicides, fungicides, and plant growth regulators.
• Polymer & Material Science: Employed in the production of specialty polymers, ion-exchange resins, and surface-active agents.
• Chemical Research & Development: A valuable reagent in organic synthesis for sulfonylation reactions and as a precursor to other sulfonic acid derivatives.
• Catalyst & Ligand Preparation: Used in the manufacture of specialized catalysts and ligands for transition metal-catalyzed reactions.
• Electrolyte Additive: Investigated for use as a component in advanced battery electrolyte formulations.

Basic Information

Product Name	1-Butanesulfonic Acid Methyl Ester
CAS No.	2374-69-8
Molecular Formula	C5H12O3S
Molecular Weight	152.21 g/mol
Synonyms	Methyl Butanesulfonate; Methyl 1-Butanesulfonate; Butane-1-sulfonic acid methyl ester; Methyl butylsulfonate; 1-Butylsulfonic acid methyl ester; Methyl n-butylsulfonate; Butyl methanesulfonate (common misnomer); Methyl sulfobutyl ether
EINECS	219-155-7

Quality Control

Our 1-Butanesulfonic Acid Methyl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

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 2-8°C for long-term stability. Keep container tightly sealed when not in use to minimize exposure to moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC/HPLC)	Total impurities ≤ 2.0%
Density (at 20°C)	~1.15 g/cm³

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