Description

1-Butene, 4-Chloro-2-Methyl- is a specialized chlorinated olefin derivative, serving as a versatile and reactive intermediate in advanced organic synthesis. Its value lies in its ability to introduce both a chloroalkyl and an alkene functional group, 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 building block for the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Polymer & Material Science: Acts as a monomer or co-monomer for creating specialty polymers with unique properties.
• Organic Synthesis Reagent: Employed in cross-coupling reactions, nucleophilic substitutions, and as a precursor for other functionalized compounds.
• Flavor & Fragrance Industry: Intermediate for the synthesis of specific aroma chemicals and flavoring agents.
• Research & Development: Critical for academic and industrial R&D in exploring new chemical reactions and pathways.

Basic Information

Product Name	1-Butene, 4-Chloro-2-Methyl-
CAS No.	10523-96-3
Molecular Formula	C5H9Cl
Molecular Weight	104.58 g/mol
Synonyms	4-Chloro-2-methyl-1-butene; 2-Methyl-4-chloro-1-butene; 1-Butene, 4-chloro-2-methyl-; 4-Chloro-2-methylbut-1-ene; (4-Chloro-2-methylbutylidene); γ-Chloro-β-methylallyl chloride (obsolete); 10523-96-3
EINECS	Contact for details

Quality Control

Our 1-Butene, 4-Chloro-2-Methyl- is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay by GC/HPLC and identification by FTIR/NMR, to verify identity and purity. Certificates of Analysis (COA) documenting all critical quality attributes are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and concentration changes. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Purity (HPLC)	≥ 94.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	0.92 - 0.96 g/mL
Refractive Index (n20/D)	1.435 - 1.445

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