Description

1-Butene,2-(Chloromethyl)- is a versatile chlorinated olefin intermediate with a reactive allylic chloride moiety. This compound is valued for its bifunctional reactivity, enabling its use as a key building block in advanced organic synthesis. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing functionalized butene chains.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where its chloromethyl group facilitates further derivatization.
• Polymer Modification: Acts as a reactive comonomer or cross-linking agent in the production of specialty polymers and resins.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, nucleophilic substitutions, and other carbon-carbon bond forming reactions in fine chemical manufacturing.
• Ligand and Catalyst Preparation: Useful for synthesizing novel organometallic complexes and chiral ligands used in asymmetric catalysis.
• Surface Active Agent Intermediate: A starting material for the production of certain types of surfactants and emulsifiers.

Basic Information

Product Name	1-Butene,2-(Chloromethyl)-
CAS No.	23010-02-8
Molecular Formula	C5H9Cl
Molecular Weight	104.58 g/mol
Synonyms	2-(Chloromethyl)-1-butene; 1-Butene, 2-(chloromethyl)-; 3-Chloro-2-methyl-1-butene; 2-Methyl-3-butenyl chloride; (2-Methylallyl)ethyl chloride; 1-Butene,2-(chloromethyl)-; 2-Chloromethyl-1-butene
EINECS	Contact for details

Quality Control

Our 1-Butene,2-(Chloromethyl)- is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, NMR, and Karl Fischer titration, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all test results are provided with every shipment to guarantee compliance with your specific R&D or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids, bases, and oxidizing agents. Recommended storage temperature is 2-8°C for extended stability. Keep container tightly sealed when not in use to prevent moisture absorption and volatility loss.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~0.92 g/mL
Refractive Index (n20/D)	~1.435

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