Description

3-Methyl-3-Butenyl Bromide is a versatile brominated organic intermediate characterized by its reactive allylic bromide functionality. This compound is valued for its role in introducing the prenyl (3-methyl-2-butenyl) group into target molecules, enabling the synthesis of more complex chemical architectures. It is a critical building block for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing the prenyl moiety found in various natural products and drug candidates.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and plant growth regulators where the 3-methyl-2-butenyl side chain is required for biological activity.
• Flavor and Fragrance Industry: Serves as a precursor in the manufacture of terpenes and other aroma chemicals, contributing to complex scent and flavor profiles.
• Organic Synthesis Reagent: Employed in alkylation and coupling reactions (e.g., with Grignard reagents or via palladium-catalyzed cross-couplings) to construct carbon-carbon bonds in research and development.
• Material Science: Utilized as a monomer or cross-linking agent in the development of specialized polymers and advanced organic materials.

Basic Information

Product Name	3-Methyl-3-Butenyl Bromide
CAS No.	20038-12-4
Molecular Formula	C5H9Br
Molecular Weight	149.03 g/mol
Synonyms	Prenyl Bromide; 1-Bromo-3-methyl-2-butene; 3-Methyl-2-butenyl Bromide; 3,3-Dimethylallyl Bromide; (3-Methylbut-2-en-1-yl)bromide; 1-Bromo-3-methylbut-2-ene; 2-Butene, 1-bromo-3-methyl-; Bromo-3,3-dimethylallyl
EINECS	Contact for details

Quality Control

Our 3-Methyl-3-Butenyl Bromide is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, NMR, and titration methods, to ensure high chemical purity and consistency. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is 2-8°C for extended stability. Keep container tightly sealed when not in use to prevent moisture ingress and volatility.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.28 g/mL
Refractive Index (n20D)	~1.480
Related Substances (GC)	Total impurities ≤ 3.0%
Water Content (KF)	≤ 0.5%

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