Description

4-Penten-1-Ylmagnesium Bromide is a highly reactive organomagnesium compound, commonly known as a Grignard reagent, with the CAS number 34164-50-6. This reagent is a critical building block in organic synthesis, valued for its ability to introduce the 4-pentenyl group into target molecules, enabling the construction of complex carbon skeletons. It is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors who require precise and reliable carbon-carbon bond formation.

Application

• Pharmaceutical Intermediate Synthesis: A key reagent for constructing carbon frameworks in active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Production: Used in the synthesis of complex molecules for crop protection agents and plant growth regulators.
• Fine Chemical Manufacturing: Serves as a versatile building block for synthesizing specialty chemicals, flavors, and fragrances.
• Polymer & Material Science: Employed to functionalize polymers and create novel monomers with specific chain lengths for advanced materials.
• Cross-Coupling Reactions: Acts as a nucleophile in transition metal-catalyzed reactions, such as Kumada couplings, to form new C-C bonds.
• Academic & Industrial R&D: A fundamental tool in research laboratories for methodological development and exploring new synthetic pathways.

Basic Information

Product Name	4-Penten-1-Ylmagnesium Bromide
CAS No.	34164-50-6
Molecular Formula	C5H9BrMg
Molecular Weight	173.33 g/mol
Synonyms	4-Pentenylmagnesium Bromide; 4-Penten-1-ylmagnesium Bromide; 1-Buten-4-ylmagnesium Bromide; Pent-4-en-1-ylmagnesium Bromide; Allylbutylmagnesium Bromide; Grignard Reagent (4-Pentenyl); 4-Pentenyl Magnesium Bromide Solution; 5-Bromo-1-pentene Magnesium Complex
EINECS	Contact for details

Quality Control

Our 4-Penten-1-Ylmagnesium Bromide is manufactured under stringent quality control protocols to ensure batch-to-batch consistency and reliability for sensitive synthetic applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as concentration (typically supplied as a solution in THF or diethyl ether), assay, and impurity profile. We adhere to cGMP principles where applicable, and our quality system is designed to meet the rigorous standards of the pharmaceutical and fine chemical industries.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile and moisture-sensitive nature, this product must be stored under an inert atmosphere (argon or nitrogen) at recommended temperatures, typically between 2°C and 8°C for solutions to maintain stability. Store away from heat, sparks, and open flame in a cool, dry, and well-ventilated area, segregated from incompatible materials.

Specification

Item	Specification
Appearance	Clear, colorless to light yellow solution
Concentration (in THF)	0.5 M - 2.0 M (Typical)
Assay (Titration)	≥ 95%
Identification (IR)	Conforms to structure
Water Content (KF)	≤ 0.1%

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