Description

5-Ethynyl-Benzo[1,3]Dioxole is a high-purity, functionalized benzodioxole derivative featuring a reactive ethynyl group. This compound is a versatile and valuable chemical building block for advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for creating novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Key synthon for the development of new drug candidates, particularly in medicinal chemistry programs targeting CNS disorders and oncology.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where the benzodioxole moiety can enhance biological activity.
• Material Science Precursor: Serves as a monomer or cross-linking agent in the synthesis of specialty polymers, resins, and advanced organic frameworks (MOFs/COFs).
• Click Chemistry: The terminal alkyne group makes it an ideal substrate for copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, a cornerstone of bioconjugation and polymer functionalization.
• Ligand and Catalyst Development: Employed in the design and synthesis of novel ligands for catalysis and metal-organic complexes.
• Fluorescent Probe Synthesis: Used to create molecular probes and sensors for biochemical and diagnostic applications.

Basic Information

Product Name	5-Ethynyl-Benzo[1,3]Dioxole
CAS No.	57134-53-9
Molecular Formula	C9H6O2
Molecular Weight	146.14 g/mol
Synonyms	5-Ethynyl-1,3-benzodioxole; 1,3-Benzodioxole, 5-ethynyl-; 5-Ethynylbenzo[d][1,3]dioxole; 5-Ethynyl-2H-1,3-benzodioxole; 5-Ethynyl-1,3-benzodioxol; 5-Ethynylbenzodioxole
EINECS	Contact for details

Quality Control

Our 5-Ethynyl-Benzo[1,3]Dioxole is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. We support cGMP compliance for pharmaceutical applications and can tailor purity grades to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its reactive ethynyl group and classification as a strong oxidizer, keep away from heat, sparks, open flames, and incompatible materials such as reducing agents. Store under an inert atmosphere if specified for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.