Description

1-Bromo-1-Butene is a versatile halogenated olefin building block of significant importance in advanced organic synthesis. Its reactive bromine and alkene functionalities make it a valuable precursor for constructing more complex molecular architectures through cross-coupling and addition reactions. This compound is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for the synthesis of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediates: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides as a reactive alkylating agent.
• Material Science & Polymer Chemistry: Acts as a monomer or functionalization agent in the development of specialty polymers and functional materials.
• Cross-Coupling Reactions: A valuable substrate in palladium-catalyzed reactions like Heck, Suzuki, and Negishi couplings for carbon-carbon bond formation.
• Organic Synthesis Reagent: Employed in laboratories for nucleophilic substitution and electrophilic addition reactions to introduce butenyl groups.
• Liquid Crystal & Electronic Chemical Precursors: Used in the synthesis of intermediates for advanced electronic materials.

Basic Information

Product Name	1-Bromo-1-Butene
CAS No.	31844-98-1
Molecular Formula	C₄H₇Br
Molecular Weight	135.00 g/mol
Synonyms	1-Butenyl bromide; (1-Buten-1-yl) bromide; But-1-en-1-yl bromide; 1-Bromobut-1-ene; 1-Butene, 1-bromo-; NSC 60545
EINECS	Contact for details

Quality Control

Our 1-Bromo-1-Butene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC analysis for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

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

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.34 g/mL
Boiling Point	~85-87°C
Water Content (KF)	≤ 0.5%

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