Description

2-Bromo-3-Methyl-2-Butene is a versatile halogenated alkene building block used extensively in organic synthesis. Its value lies in its reactivity as an allylic bromide, enabling efficient carbon-carbon bond formation and functional group transformations. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing active ingredients and advanced intermediates.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Building block for creating herbicides, fungicides, and pesticide intermediates.
• Organic Synthesis Reagent: Used in alkylation, coupling reactions (e.g., Grignard, Suzuki), and as an electrophile in nucleophilic substitution.
• Flavor & Fragrance Industry: Intermediate for the production of terpene-based aroma chemicals.
• Polymer Chemistry: Monomer or cross-linking agent in the development of specialty polymers and resins.
• Material Science Research: Used in the development of novel organic materials and liquid crystals.

Basic Information

Product Name	2-Bromo-3-Methyl-2-Butene
CAS No.	3017-70-7
Molecular Formula	C5H9Br
Molecular Weight	149.03 g/mol
Synonyms	3-Methyl-2-butenyl bromide; 1-Bromo-3-methyl-2-butene; Prenyl bromide; 2-Butene, 2-bromo-3-methyl-; (3-Methyl-2-buten-1-yl) bromide; 2-Bromo-3-methylbut-2-ene; 3-Methyl-2-buten-1-yl bromide; 1-Bromo-3-methylbut-2-ene
EINECS	221-155-7

Quality Control

Our 2-Bromo-3-Methyl-2-Butene is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance 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 such as strong bases and oxidizing agents. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use. Recommended storage temperature: 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Purity (HPLC)	≥ 96.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	1.30 - 1.35 g/mL
Refractive Index (n20D)	1.480 - 1.490

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