Description

3-Bromo-1-Butene is a versatile halogenated alkene building block essential for organic synthesis. Its reactive bromine and terminal alkene functionalities make it a critical intermediate for constructing more complex molecular architectures. This compound is primarily utilized by researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for applications such as cross-coupling reactions and polymer modification.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Cross-Coupling Reactions: Acts as an electrophile in palladium-catalyzed reactions like Suzuki, Heck, and Negishi couplings to form carbon-carbon bonds.
• Polymer & Material Science: Employed as a monomer or modifier in the creation of specialty polymers and functional materials.
• Organic Synthesis Reagent: Utilized in alkylation, addition, and cyclization reactions to introduce butenyl groups.
• Ligand & Catalyst Preparation: Used in the synthesis of novel ligands and organometallic catalysts.
• Flavor & Fragrance Industry: Can be an intermediate in the synthesis of certain aroma chemicals.
• Research & Development: A valuable reagent for academic and industrial R&D in synthetic chemistry.

Basic Information

Product Name	3-Bromo-1-Butene
CAS No.	22037-73-6
Molecular Formula	C₄H₇Br
Molecular Weight	135.00 g/mol
Synonyms	1-Butene, 3-bromo-; 3-Butenyl bromide; (3-Bromobut-1-ene); 3-Bromobutene-1; But-3-en-1-yl bromide; 1-Bromo-3-butene; 3-Bromobut-1-ene; Bromobutene
EINECS	244-732-5

Quality Control

Our 3-Bromo-1-Butene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to guarantee compliance with your specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. Due to its light-sensitive nature and reactivity, it is recommended to store under an inert atmosphere for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.30 - 1.35 g/mL
Refractive Index (n20/D)	1.465 - 1.475
Water Content (KF)	≤ 0.5%

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