Furaptra (Mag-Fura-2) tetrapotassium salt ≥95% (durch HPLC) fluoreszierender Indikator, zur Kalziumbestimmung

Lieferant: Biotium

50035.EA 323 EUR
50035.
Furaptra (Mag-Fura-2) tetrapotassium salt ≥95% (durch HPLC) fluoreszierender Indikator, zur Kalziumbestimmung
Furaptra (Mag-Fura-2) tetrapotassium salt

Mag-Fura-2 is a UV-excitable fluorescent indicator for magnesium with a Kd of 1.9 mM (1,2). Similar to Fura-2, the excitation wavelength of Mag-Fura-2 undergoes a blue shift from 369 nm to 330 nm. Mag-Fura-2 also responds to Ca2+ but with a significantly higher Kd than Fura-2 for Ca2+.


  • Absorption/Emission 369nm/511nm (H2O)
  • Extinction Coefficient 22,000
  • Cell permeability: Membrane impermeant
  • Colors: Green
  • Light yellow solid soluble in water (pH > 6)
  • Store at -20°C and protect from light


An important application of Mag-Fura-2 is its use in detecting high, transient Ca2+ concentration during Ca2+ spikes (3,4). Mag-Fura-2/tetraammonium salt can be loaded into cells by microinjection or scrape loading. Also see Mag-Fura-2, tetrasodium salt (50036) and the cell membrane-permeant Mag-Fura-2 AM ester (50037, 50038, 50039).

Formel: C₁₈H₁₀K₄N₂O₁₁
Molecular Weight: 587 g/mol
Lagertemperatur: Gefrierschrank
CAS-Nummer: 132319-57-4

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