Description

3-Butenoyl Chloride, 3-Methyl- CAS NO 3350-77-4 is a highly reactive, unsaturated acid chloride derivative, serving as a critical building block in advanced organic synthesis. Its value lies in providing a versatile handle for introducing the 3-methyl-3-butenoyl moiety, enabling the construction of complex molecular architectures. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key starting material for synthesizing novel drug candidates, particularly those requiring unsaturated ketone or amide functionalities.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its reactive chloride group facilitates coupling with various nucleophiles.
• Polymer Chemistry: Acts as a monomer or co-monomer in the synthesis of specialty polymers with tailored properties, such as polyesters or polyamides.
• Fine Chemical Production: Employed in the manufacture of flavors, fragrances, and other high-value specialty chemicals.
• Material Science Research: Utilized in surface modification and the creation of functionalized materials for coatings and adhesives.
• Academic & R&D: Serves as a valuable reagent in university and corporate research laboratories for methodological development and exploring new chemical spaces.

Basic Information

Product Name	3-Butenoyl Chloride, 3-Methyl-
CAS No.	3350-77-4
Molecular Formula	C5H7ClO
Molecular Weight	118.56 g/mol
Synonyms	3-Methyl-3-butenoyl chloride; 3-Methylbut-3-enoyl chloride; 3-Methylcrotonyl chloride; Isopropenylacetyl chloride; 3-Butenoyl chloride, 3-methyl-; 3-Methyl-3-butenoic acid chloride
EINECS	Contact for details

Quality Control

Our 3-Methyl-3-butenoyl chloride is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with 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 2-8°C (refrigerated) or as specified on the label. This product is hygroscopic (moisture-sensitive) and reacts vigorously with water, alcohols, and bases. Keep away from heat, sparks, and open flame. Use under an inert atmosphere (e.g., nitrogen or argon) for prolonged storage or after opening to maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (Karl Fischer)	≤ 0.5%

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