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Mag-Fluo-4 potassium salt
The cell-impermeant Mag-Fluo-4 is an analog of Fluo-4 with a Kd for Mg ion of 4.7 mM and a Kd for Ca ion of 22 µM, making it useful as an intracellular Mg ion indicator as well as a low-affinity Ca ion indicator.
Chemical structure for Mag-Fluo-4 potassium salt
Chemical structure for Mag-Fluo-4 potassium salt
CatalogSize
Price
Quantity
2040010x50 ug
Price
 
Physical properties

Dissociation constant (Kd, nM)22000
Molecular weight681.77
SolventWater
Spectral properties

Extinction coefficient (cm -1 M -1)
82000
Excitation (nm)495
Emission (nm)528
Quantum yield
0.16
1
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12352200
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Page updated on October 13, 2025