Description

4-Chloro-2-Methylbutyric Acid Methyl Ester is a versatile chlorinated ester intermediate of significant importance in fine chemical synthesis. Its reactive chloro and ester functional groups make it a valuable building block for constructing more complex molecules. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical industries for use in the development of active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a chlorinated alkyl chain.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, where its structure can be incorporated into bioactive molecules.
• Organic Synthesis Reagent: Serves as a versatile electrophile in alkylation reactions and as a precursor for further functional group transformations in research laboratories.
• Flavor and Fragrance Industry: Potential intermediate for the synthesis of certain ester-based aroma compounds, subject to purity and regulatory compliance.
• Polymer Modification: Can be used as a monomer or cross-linking agent in the synthesis of specialty polymers with specific properties.

Basic Information

Product Name	4-Chloro-2-Methylbutyric Acid Methyl Ester
CAS No.	13888-03-4
Molecular Formula	C6H11ClO2
Molecular Weight	150.60 g/mol
Synonyms	Methyl 4-Chloro-2-methylbutyrate; 4-Chloro-2-methylbutanoic acid methyl ester; 2-Methyl-4-chlorobutyric acid methyl ester; Methyl 4-chloro-2-methylbutanoate; 4-Chloro-2-methylbutyric acid, methyl ester; Butanoic acid, 4-chloro-2-methyl-, methyl ester
EINECS	237-652-9

Quality Control

Our 4-Chloro-2-Methylbutyric Acid Methyl Ester is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your research or production requirements.

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 volatilization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 20°C)	1.08 - 1.12 g/cm³
Refractive Index (n20D)	1.430 - 1.435

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