Description

ε-Methyl-ε-Caprolactone is a specialized lactone derivative, a key monomer and intermediate in advanced polymer synthesis and fine chemical manufacturing. This compound matters for its ability to introduce methyl-substituted caprolactone units, modifying polymer properties such as crystallinity, biodegradability, and thermal stability. It is primarily needed by R&D chemists and production engineers in the pharmaceutical, specialty polymer, and agrochemical industries for developing novel materials and active ingredients.

Application

• Polymer Chemistry: As a monomer for the synthesis of modified polycaprolactones (PCL) and other aliphatic polyesters with tailored properties for medical devices, drug delivery systems, and biodegradable plastics.
• Pharmaceutical Intermediates: Serves as a crucial building block in the multi-step synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Fine Chemical Synthesis: Used as a versatile intermediate for producing specialty chemicals, flavors, fragrances, and agrochemicals.
• Resin & Coating Modifiers: Incorporated into polymer formulations to alter flexibility, adhesion, and degradation profiles of coatings and resins.
• Cross-linking Agent: Functions in the production of cross-linked polymers and networks for enhanced material performance.
• Academic & Industrial Research: A valuable reagent for exploring new synthetic methodologies and material science applications.

Basic Information

Product Name	ε-Methyl-ε-Caprolactone
CAS No.	2549-59-9
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	6-Methyl-ε-caprolactone; 6-Methyloxepan-2-one; α-Methyl-ε-caprolactone; Methylcaprolactone; 6-Methyl-2-oxepanone; Methyl-ε-caprolactone; 1-Oxa-2-oxocyclooctane, 7-methyl-; 7-Methyl-2-oxepanone
EINECS	219-819-9

Quality Control

Our ε-Methyl-ε-Caprolactone is produced under strict 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 identity, assay, and impurity profiles are provided with every shipment to support 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). Keep away from strong oxidizing agents, strong acids, and strong bases. For long-term storage under an inert atmosphere (nitrogen/argon), please contact us for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.458 - 1.462
Density (20°C)	1.02 - 1.06 g/cm³

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