Description

2-Butynyl Chloride is a highly reactive organic building block characterized by its terminal alkyne and acid chloride functionalities. This compound is valued for its role as a versatile intermediate in the synthesis of more complex molecules, enabling efficient carbon chain extension and functional group transformations. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries for constructing advanced scaffolds and active ingredients.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and novel drug candidates.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators.
• Specialty Chemical Manufacturing: Serves as a precursor for dyes, pigments, and advanced polymeric materials.
• Organic Synthesis & Research: Employed in academic and industrial R&D for coupling reactions (e.g., Sonogashira) and as a propioloyl chloride equivalent.
• Material Science: Intermediate in the development of specialty polymers and liquid crystal compounds.

Basic Information

Product Name	2-Butynyl Chloride
CAS No.	3355-17-7
Molecular Formula	C₄H₅Cl
Molecular Weight	88.54 g/mol
Synonyms	But-2-ynoyl chloride; 2-Butynoic acid chloride; 2-Butynoyl chloride; But-2-ynoic acid chloride; Propioloyl chloride, methyl-; Methylpropioloyl chloride; 2-Butynyl chloride; 2-Butynoic acid, chloride
EINECS	222-133-6

Quality Control

Our 2-Butynyl Chloride is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC and identity confirmation by FT-IR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical properties 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, well-ventilated place at temperatures between 2°C and 8°C (refrigerated) to minimize degradation and manage its highly volatile nature. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 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.