Description

Ethyl 4-Isocyanatobutyrate is a versatile bifunctional organic compound containing both an isocyanate group and an ester moiety. This dual functionality makes it a valuable building block for the synthesis of polymers, pharmaceuticals, and fine chemicals. It is primarily utilized by research and development chemists, process engineers, and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries.

Application

• Pharmaceutical Intermediates: Key building block for synthesizing active pharmaceutical ingredients (APIs), particularly those requiring urea or carbamate linkages.
• Polymer Modification: Used as a cross-linking agent or chain extender in polyurethane and polyurea systems to tailor material properties like flexibility, hardness, and chemical resistance.
• Agrochemical Synthesis: Intermediate in the production of herbicides, fungicides, and insecticides, where its reactive isocyanate group facilitates the formation of bioactive ureas.
• Specialty Chemical Synthesis: Serves as a precursor for creating surfactants, corrosion inhibitors, and other performance chemicals.
• Bioconjugation & Linker Chemistry: Useful in biochemical research for coupling molecules to proteins, peptides, or other biomolecules via stable bonds.
• Coatings & Adhesives: Imparts durability and adhesion properties in high-performance coating and adhesive formulations.

Basic Information

Product Name	Ethyl 4-Isocyanatobutyrate
CAS No.	106508-62-7
Molecular Formula	C7H11NO3
Molecular Weight	157.17 g/mol
Synonyms	4-Isocyanatobutanoic Acid Ethyl Ester; Ethyl 4-Isocyanatobutanoate; Butanoic acid, 4-isocyanato-, ethyl ester; Ethyl γ-Isocyanatobutyrate; NSC 405124; 4-(Ethoxycarbonyl)butyl isocyanate; 106508-62-7
EINECS	Contact for details

Quality Control

Our Ethyl 4-Isocyanatobutyrate is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is 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). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent degradation from moisture and to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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