Description

Diethyl Butylmalonate is a versatile diester compound, CAS NO 133-08-4, widely recognized as a key building block in organic synthesis. Its value lies in its bifunctional structure, featuring two reactive ester groups that enable efficient carbon-carbon bond formation and molecular chain extension. This chemical is essential for research chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for complex molecule construction.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing malonate-derived structures.
• Agrochemical Synthesis: Used in the manufacturing of pesticides, herbicides, and plant growth regulators where the butylmalonate moiety is incorporated.
• Fine Chemical Production: Serves as a starting material for flavors, fragrances, and other specialty organic compounds.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialized polymers and resins.
• Organic Synthesis Reagent: Employed in classic reactions like the malonic ester synthesis for preparing carboxylic acids and substituted acetic acid derivatives.
• Chemical Research & Development: A valuable tool in academic and industrial R&D labs for exploring new synthetic pathways and novel molecular architectures.

Basic Information

Product Name	Diethyl Butylmalonate
CAS No.	133-08-4
Molecular Formula	C11H20O4
Molecular Weight	216.27 g/mol
Synonyms	Diethyl Butylmalonate; Butylmalonic Acid Diethyl Ester; Diethyl Butylpropanedioate; Diethyl n-Butylmalonate; Ethyl Butylmalonate; Butylmalonic Ester; Propanedioic Acid, Butyl-, Diethyl Ester; 1,3-Diethyl Butylpropanedioate
EINECS	205-101-5

Quality Control

Our Diethyl Butylmalonate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request 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 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 (n20D)	1.420 - 1.425
Density (20°C)	0.980 - 1.010 g/mL

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