Description

α-Methyl-γ-Butyrolactone is a versatile lactone derivative and a valuable chemical intermediate with a unique cyclic ester structure. This compound is prized for its ability to act as a building block in the synthesis of more complex molecules, offering significant value in fine chemical and pharmaceutical manufacturing. Industries such as pharmaceuticals, agrochemicals, and specialty polymers rely on this high-purity intermediate for its consistent reactivity and quality.

Application

• Pharmaceutical Intermediate: A key starting material in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with lactone or γ-hydroxy acid motifs.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Polymer & Resin Modifier: Serves as a monomer or cross-linking agent to modify the properties of specialty polymers, enhancing flexibility or biodegradability.
• Flavor & Fragrance Ingredient: Acts as a precursor for lactone-based flavor compounds, contributing to creamy, coconut, or peach notes in food and perfumery.
• Organic Solvent & Reaction Medium: Employed as a polar aprotic solvent in various organic synthesis and purification processes.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways and developing novel chemical entities in R&D laboratories.

Basic Information

Product Name	α-Methyl-γ-Butyrolactone
CAS No.	1679-47-6
Molecular Formula	C5H8O2
Molecular Weight	100.12 g/mol
Synonyms	α-Methyl-γ-butyrolactone; 4-Methylbutyrolactone; 4-Methyldihydro-2(3H)-furanone; 3-Methylbutyrolactone; 4-Methyl-γ-butyrolactone; 4-Methylbutan-4-olide; 4-Methyloxolan-2-one
EINECS	216-829-1

Quality Control

Our α-Methyl-γ-Butyrolactone is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical testing, including GC and HPLC analysis, to meet the stringent requirements of our industrial and research partners. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is supplied with every shipment to guarantee compliance with your specifications.

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 strong oxidizing agents, strong bases, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.430 - 1.435
Density (20°C)	1.040 - 1.060 g/mL

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