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Calcium ionophore II – High Purity for ISE | Selectoprobe

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Catalog No: SP-I-0007
Purity: 97%+
CAS No: 74267-27-9
Synonyms: ETH 129; 2,2'-Oxybis[N,N-dicyclohexylacetamide]
MW: 460.69
Formula: C28H48N2O3

 

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References

Bedlechowicz-Śliwakowska I, Lingenfelter P, Sokalski T, et al.Ion-selective electrode for measuring low Ca2+ concentrations in the presence of high K+, Na+ and Mg2+ background . Anal. Bioanal. Chem.,2006,385:1477-1482; DOI: 10.1007/s00216-006-0607-y.

Abstract

In this work, ion-selective electrodes for calcium ion were investigated. Two ionophores were used in the membranes: ETH 1001 and ETH 129. An internal filling solution buffered for primary ion was used that allowed the lower detection limit to be decreased down to 10(-8.8) M. Theoretical and experimental electrode characteristics pertaining to both primary and interfering ions are discussed. Better behavior was obtained with the electrode prepared with ETH 129 in the membrane. This electrode would be the most likely candidate for obtaining a low Ca(2+) detection limit in measurements performed with high K(+), Na(+), Mg(2+) background, which is found inside the cells of living organisms, for example. The potentiometric response of the electrode in solutions containing main and interfering ions is in good agreement with simulated curves obtained using the Nernst-Planck-Poisson (NPP) model.

References

Liu, X., Yao, Y., Shao, Y. et al.Phase-dependent ion-to-electron transducing efficiency of WS2 nanosheets for an all-solid-state potentiometric calcium sensor. Microchim Acta，2020， 187： 525 

Abstract

Ultrathin metallic WS2 (M-WS2) nanosheets and semiconductive WS2 (S-WS2) nanosheets were exfoliated and for the first time employed as ion-to-electron transducing layer to construct an all-solid-state ion-selective electrode. Importantly, we found that the transducing efficiency of WS2 nanosheet-based solid-contact layer is phase-dependent. The M-WS2 nanosheets with larger content of 1 T-phase structure exhibit higher transducing efficiency than S-WS2 nanosheets, which can be ascribed to the remarkable conductivity of M-WS2 nanosheets. In order to demonstrate the excellent properties of the M-WS2 nanosheet-based tranducing layer, an all-solid-state calcium ion potentiometric sensor was constructed as the model. As expected, a Nernstian response (27.41 mV per decade, R2 = 0.9998) with a wide linear range of 1.0 × 10–5.0 to 1.0 × 10–2.0 M and a limit of detection of 2.0 μM was obtained. The developed all-solid-state potentiometric sensor using M-WS2 nanosheets as ion-to-electron transducing layer is expected to bring new progress for routine detection in various fields.

 

N,N,N',N'-Tetracyclohexyl-3-oxapentanediamide | C28H48N2O3 | CID 194578 - PubChem (nih.gov)

Documents

SP-I-0007(Calcium ionophore II)-SDSDownload

Catalog No

SP-I-0007
Formula

C28H48N2O3
Purity

95%-98%
Weight

10mg, 30mg, 50mg, 100mg, 200mg, 250mg
CAS No

74267-27-9
Synonyms

ETH 129; 2,2'-Oxybis[N,N-dicyclohexylacetamide]
MW

460.69

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