Description

3-Bromo-[1,2,4]Oxadiazole-5-Carboxylic Acid Ethyl Ester is a high-value brominated heterocyclic building block, prized for its reactivity as an electrophile in cross-coupling reactions and as a versatile synthon for constructing complex molecular architectures. Its core value lies in enabling the efficient synthesis of novel compounds, particularly in the discovery and development of new active pharmaceutical ingredients (APIs) and agrochemicals. This intermediate is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-purity building blocks for their synthetic programs.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, infectious diseases, and oncology.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the oxadiazole ring's bioactivity.
• Material Science Research: Serves as a building block for creating specialized polymers, liquid crystals, and organic electronic materials due to its rigid heterocyclic structure.
• Cross-Coupling Reactions: The bromine atom makes it an excellent substrate for Suzuki, Stille, and Buchwald-Hartwig amination reactions to introduce the oxadiazole moiety.
• Functional Group Transformation: The ethyl ester group can be hydrolyzed to the corresponding carboxylic acid or further derivatized to amides and hydrazides.
• Library Synthesis for High-Throughput Screening: Employed in combinatorial chemistry to generate diverse compound libraries for biological activity screening.

Basic Information

Product Name	3-Bromo-[1,2,4]Oxadiazole-5-Carboxylic Acid Ethyl Ester
CAS No.	121562-09-2
Molecular Formula	C5H5BrN2O3
Molecular Weight	221.01 g/mol
Synonyms	Ethyl 3-Bromo-1,2,4-oxadiazole-5-carboxylate; 3-Bromo-1,2,4-oxadiazole-5-carboxylic Acid Ethyl Ester; 5-Ethoxycarbonyl-3-bromo-1,2,4-oxadiazole; 3-Bromo-5-(ethoxycarbonyl)-1,2,4-oxadiazole; 1,2,4-Oxadiazole-5-carboxylic acid, 3-bromo-, ethyl ester; 3-Brom-1,2,4-oxadiazol-5-carbonsäureethylester (German); 3-ブロモ-1,2,4-オキサジアゾール-5-カルボン酸エチル (Japanese)
EINECS	Contact for details

Quality Control

Our production of 3-Bromo-[1,2,4]Oxadiazole-5-Carboxylic Acid Ethyl Ester adheres to stringent in-process controls and final release testing to ensure batch-to-batch consistency and high purity. We employ advanced analytical techniques including HPLC, GC, NMR, and MS for comprehensive characterization. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment, supporting your quality and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥97.0% (Area %)
Melting Point	Contact for details
Loss on Drying	≤0.5%
Residue on Ignition	≤0.1%
Heavy Metals	≤20 ppm

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