Date published: 2025-12-5

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Ethyltriphenylphosphonium bromide (CAS 1530-32-1)

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Alternate Names:
TEP
CAS Number:
1530-32-1
Molecular Weight:
371.25
Molecular Formula:
C20H20BrP
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Ethyltriphenylphosphonium bromide (ETPB) is a colorless solid and falls under the family of phosphonium salts. It possesses solubility in organic solvents like ethers, alcohols, and chloroform. Its unique properties have led to its application in numerous scientific research studies, both in vitro and in vivo. One of the fascinating roles of Ethyltriphenylphosphonium bromide is its believed function as a protonophore. This ability allows it to transport protons across cell membranes, consequently influencing the activity of ion channels, enzymes, and various proteins within the cell. The impact of this action can be diverse and significant.


Ethyltriphenylphosphonium bromide (CAS 1530-32-1) References

  1. Commensurate and incommensurate structures of the hexabromotellurate(IV) bis[dibromodiselenate(I)] ion - [(C2H5)n(C6H5)4-nP]2[TeBr6(Se2Br2)2], n = 0,1.  |  Janickis, V., et al. 2002. Acta Crystallogr B. 58: 977-85. PMID: 12456976
  2. Synthesis of 3β-tert-Butyldimethylsiloxy-22-phenylthio-23,24-bisnorchola-5,9(11)-diene and Reductive Nucleophilic Attack on a Branched Aliphatic Aldehyde.  |  Nagai, T., et al. 2018. Chem Pharm Bull (Tokyo). 66: 334-338. PMID: 29491266
  3. Highly efficient and reversible low-concentration SO2 absorption in flue gas using novel phosphonium-based deep eutectic solvents with different substituents  |  Yongqi Zhao a, Jinxiao Dou a, Aoran Wei a, Salman Khoshkrish a, Jianglong Yu a b. 2021. Journal of Molecular Liquids. 340.
  4. Zero-Dimensional Luminescent Metal Halide Hybrids Enabling Bulk Transparent Medium as Large-Area X-Ray Scintillators  |  Bohan Li, Yan Xu, Xinlei Zhang, Kai Han, Jiance Jin, Zhiguo Xia. 2022. Advanced Materials. 10.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Ethyltriphenylphosphonium bromide, 25 g

sc-235099
25 g
$21.00