Description

Methyl 5-Chloropentanoate is a versatile chlorinated ester intermediate of significant importance in advanced organic synthesis. Its value lies in its bifunctional reactivity, featuring both an electrophilic alkyl chloride and a nucleophilic ester group, making it a key building block for constructing more complex molecules. This compound is primarily needed by R&D and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from active pharmaceutical ingredient (API) synthesis to polymer modification.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those requiring a 5-carbon chain with terminal functionality.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the chloropentanoate moiety is incorporated.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for specialty polymers, coatings, and resins, imparting specific chemical resistance or physical properties.
• Organic Synthesis Building Block: Employed in nucleophilic substitution reactions to introduce the 5-chloropentyl group or in further transformations of the ester functionality to acids, alcohols, or amides.
• Ligand & Catalyst Preparation: Useful in the synthesis of complex ligands for metal catalysis or as a component in catalyst design.
• Flavor & Fragrance Industry: Acts as an intermediate for the synthesis of specific ester-based aroma compounds.

Basic Information

Item	Detail
Product Name	Methyl 5-Chloropentanoate
CAS No.	14273-86-0
Molecular Formula	C6H11ClO2
Molecular Weight	150.60 g/mol
Synonyms	5-Chloropentanoic Acid Methyl Ester; Methyl 5-Chlorovalerate; 5-Chlorovaleric Acid Methyl Ester; Methyl δ-Chlorovalerate; δ-Chlorovaleric Acid Methyl Ester; Methyl ester of 5-chloropentanoic acid; Valeric acid, 5-chloro-, methyl ester
EINECS	Contact for details

Quality Control

Our Methyl 5-Chloropentanoate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopy (IR, NMR), to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment and are available upon request to support your quality assurance protocols.

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 acids, bases, and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability, although the product is typically stable at controlled room temperature for shorter periods. Keep container tightly sealed when not in use to minimize moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.435 - 1.445
Density (20°C)	1.08 - 1.12 g/mL

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