Description

Butyl 4-Bromobutyrate is a versatile organic ester compound, specifically an alkyl bromoalkanoate, widely utilized as a key synthetic intermediate in organic synthesis. Its value lies in the reactive bromine atom and ester functionality, which allow for efficient nucleophilic substitution and subsequent transformations. This makes it an essential building block for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a butyric acid or four-carbon chain extension.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the bromobutyl moiety is incorporated into the final molecule.
• Liquid Crystal & OLED Material Production: Serves as a building block for creating advanced organic materials used in displays and electronics.
• Polymer & Resin Modification: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers with tailored properties.
• Organic Synthesis Reagent: Employed in laboratories for alkylation reactions, homologation, and the introduction of functionalized butyl groups into target molecules.
• Flavor & Fragrance Industry: Used as an intermediate for synthesizing specific ester-based aroma compounds.

Basic Information

Item	Detail
Product Name	Butyl 4-Bromobutyrate
CAS No.	3540-75-8
Molecular Formula	C8H15BrO2
Molecular Weight	223.11 g/mol
Synonyms	4-Bromobutanoic Acid Butyl Ester; Butyl 4-Bromobutanoate; n-Butyl 4-Bromobutyrate; 4-Bromobutyric Acid Butyl Ester; Butyl γ-Bromobutyrate; γ-Bromobutyric Acid Butyl Ester; NSC 2211; 1-Butyl 4-bromobutanoate
EINECS	222-567-9

Quality Control

Our Butyl 4-Bromobutyrate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including GC/HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flames. Due to its light-sensitive nature, containers should be amber or otherwise opaque.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.455 - 1.465
Density (g/mL, 20°C)	1.240 - 1.280
Water Content (KF)	≤ 0.5%

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