Description

4-Isocyanobutyric Acid Methyl Ester is a versatile bifunctional organic intermediate containing both an isocyanate and an ester group. This compound is valued for its reactivity, serving as a crucial building block in the synthesis of more complex molecules, particularly in pharmaceutical and polymer chemistry. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing active pharmaceutical ingredients (APIs), functional polymers, and advanced materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a urethane or urea linkage.
• Polymer Chemistry: Used in the production of specialty polyurethanes, polyureas, and other functional polymers, imparting specific properties to the final material.
• Agrochemical Synthesis: Intermediate in the manufacture of certain herbicides, fungicides, and plant growth regulators.
• Cross-linking Agent: Functions as a cross-linker in coatings, adhesives, and resin systems due to its reactive isocyanate group.
• Chemical Research (R&D): A valuable reagent in organic synthesis and medicinal chemistry for constructing novel molecular scaffolds.
• Peptide Mimetics: Used in the synthesis of peptide analogs and other bio-active compounds.

Basic Information

Product Name	4-Isocyanobutyric Acid Methyl Ester
CAS No.	51642-06-9
Molecular Formula	C6H9NO3
Molecular Weight	143.14 g/mol
Synonyms	Methyl 4-Isocyanobutyrate; Methyl 4-Isocyanobutanoate; 4-Isocyanobutanoic Acid Methyl Ester; 4-(Methoxycarbonyl)butyl Isocyanate; Butanoic acid, 4-isocyanato-, methyl ester; γ-Isocyanobutyric Acid Methyl Ester
EINECS	Contact for details

Quality Control

Our 4-Isocyanobutyric Acid Methyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay (HPLC), identity confirmation (IR, NMR), and impurity profiling, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under a dry inert atmosphere to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (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.