ETH 1001

Calcium ionophore I is a Ca²⁺-selective ionophore for biological membranes that can be used in microelectrodes for the determination of intracellular Ca²⁺-activities and of slowly changing Ca²⁺ levels.

Calcium ionophore I (ETH 1001) is a selective Ca2+ ionophore for biological membranes. Calcium ionophore I can be used in Ca2+-selective microelectrodes that can be used for quantitative intracellular measurements of resting Ca2+-activities and of slowly changing Ca2+-levels[1][2].

This is a neutral Ca selectophore. It can be purified by thick layer (2mm) chromatography (Kieselgel F245) and eluted with Me2CO/CHCl3 (2:1). [Ammann et al. Helv Chim Acta 56 1780 1973, Simon & Carafoli Methods Enzymol 56 439 1977.]

dagostino m, lee co. neutral carrier na+- and ca2+-selective microelectrodes for intracellular application. biophys j. 1982 dec;40(3):199-207.caroni p, gazzotti p, vuilleumier p, et al. ca2+ transport mediated by a synthetic neutral ca2+ -ionophore in biological membranes. biochim biophys acta. 1977 nov 1;470(3):437-45.hinds tr, vincenzi ff. the effect of eth 1001 on ion fluxes across red blood cell membranes. cell calcium. 1985 jun;6(3):265-79.lücke a, lehmenkühler a, speckmann ej. the influence of the convulsant pentylenetetrazol on ca2+-selective microelectrodes (neutral carrier eth 1001). j neurosci methods. 1989 aug;29(2):139-42.lee mh, yoo cl, lee js, et al. tweezer-type neutral carrier-based calcium-selective membrane electrode with drastically reduced anionic interference. anal chem. 2002 jun 1;74(11):2603-7.