Description

δ-Methyl-ε-Caprolactone CAS NO 2549-58-8 is a specialized lactone derivative, a versatile chemical intermediate prized for its unique cyclic ester structure. This compound is critical for synthesizing advanced polymers, fine chemicals, and pharmaceutical building blocks where precise molecular architecture is required. It is essential for R&D and production teams in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel materials and active ingredients.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Polymer & Resin Modifier: Used in the production of specialty polyesters, polyurethanes, and coatings to modify flexibility, biodegradability, and thermal properties.
• Agrochemical Synthesis: Intermediate for creating advanced pesticides, herbicides, and plant growth regulators.
• Flavor & Fragrance Ingredient: Serves as a precursor for lactone-based aroma chemicals, contributing to creamy, fruity, or coconut notes.
• Crosslinking Agent: Employed in formulations for high-performance adhesives, sealants, and elastomers.
• Chemical Research (R&D): A valuable reagent in organic synthesis and medicinal chemistry for exploring new chemical entities.

Basic Information

Product Name	δ-Methyl-ε-Caprolactone
CAS No.	2549-58-8
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	6-Methyl-ε-caprolactone; 6-Methyloxepan-2-one; 6-Methyl-2-oxepanone; Methyl-ε-caprolactone; 6-Methylhexano-6-lactone; 6-Methyl-6-hexanolide; δ-Methyl-ε-caprolactone
EINECS	219-824-5

Quality Control

Our δ-Methyl-ε-Caprolactone is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing including chromatography (HPLC, GC) and spectroscopic methods to ensure high purity and consistency. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong bases and strong oxidizing agents. The product is moisture-sensitive; keep container tightly sealed when not in use.

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 (20°C)	1.4580 - 1.4620
Density (20°C)	1.02 - 1.06 g/mL

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