Description

2-Butynoic Acid, 4-Bromo-, Ethyl Ester is a specialized brominated alkyne ester, a high-purity building block crucial for advanced organic synthesis. This compound is valued for its unique reactivity profile, enabling the construction of complex molecular architectures in pharmaceutical and agrochemical research. It serves as a key intermediate for researchers and process chemists in fine chemical, pharmaceutical, and material science industries seeking to introduce functionalized alkyne motifs.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and novel drug candidates, particularly those requiring bromo-alkyne functional groups for coupling reactions.
• Agrochemical Synthesis: Serves as a precursor in the development of new herbicides, fungicides, and plant growth regulators.
• Material Science Research: Employed in the creation of specialized polymers, liquid crystals, and organic electronic materials where the alkyne group is essential for cross-linking or conjugation.
• Chemical Biology & Proteomics: Acts as a click chemistry reagent for bioconjugation and labeling applications, such as in activity-based protein profiling (ABPP).
• Organic Synthesis Building Block: Utilized in Sonogashira coupling, cycloaddition, and other metal-catalyzed reactions to construct complex organic molecules in academic and industrial R&D.

Basic Information

Product Name	2-Butynoic Acid, 4-Bromo-, Ethyl Ester
CAS No.	39595-70-5
Molecular Formula	C6H7BrO2
Molecular Weight	191.03 g/mol
Synonyms	4-Bromo-2-butynoic acid ethyl ester; Ethyl 4-bromo-2-butynoate; 4-Bromobut-2-ynoic acid ethyl ester; 2-Butynoic acid, 4-bromo-, ethyl ester; Bromoalkyne ester C6; NSC 163045; Ethyl (4-bromobut-2-ynoate)
EINECS	Contact for details

Quality Control

Our 2-Butynoic Acid, 4-Bromo-, Ethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong acids and incompatible materials. The container should be kept tightly sealed in a dry and inert atmosphere.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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