Date published: 2026-2-8

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3-Ethynylbenzonitrile (CAS 171290-53-2)

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Alternate Names:
3-Cyanophenylacetylene
CAS Number:
171290-53-2
Molecular Weight:
127.14
Molecular Formula:
C9H5N
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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3-Ethynylbenzonitrile, also referred to as 3-ethynylbenzamide, is a synthetic organic compound. At room temperature, it appears as a colorless, crystalline solid with solubility in organic solvents. 3-Ethynylbenzonitrile has found utility in the synthesis of a broad range of compounds, such as dyes, plastics, and surfactants. While the precise mechanism of action for 3-Ethynylbenzonitrile is yet to be fully elucidated, current understanding suggests its role as a proton acceptor. This property enables the transfer of protons from one molecule to another, rendering it highly useful in synthesizing diverse compounds.


3-Ethynylbenzonitrile (CAS 171290-53-2) References

  1. Coordination Networks of 3,3'-Dicyanodiphenylacetylene and Silver(I) Salts: Structural Diversity through Changes in Ligand Conformation and Counterion.  |  Hirsch, KA., et al. 1997. Inorg Chem. 36: 2960-2968. PMID: 11669944
  2. Inhibition of Acinetobacter-Derived Cephalosporinase: Exploring the Carboxylate Recognition Site Using Novel β-Lactamase Inhibitors.  |  Caselli, E., et al. 2018. ACS Infect Dis. 4: 337-348. PMID: 29144725
  3. Regio-controllable Cobalt-Catalyzed Sequential Hydrosilylation/Hydroboration of Arylacetylenes.  |  Cheng, Z., et al. 2021. Angew Chem Int Ed Engl. 60: 22454-22460. PMID: 34347353
  4. Receptor-interacting protein kinase 1 (RIPK1) inhibitor: a review of the patent literature (2018-present).  |  Xu, L., et al. 2023. Expert Opin Ther Pat. 33: 101-124. PMID: 36960668

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

3-Ethynylbenzonitrile, 250 mg

sc-256497
250 mg
$207.00