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Rhod-5N, tripotassium salt
Calcium measurement is critical for numerous biological investigations. Fluorescent probes that show spectral responses upon binding Ca2+ have enabled researchers to investigate changes in intracellular free Ca2+ concentrations by using fluorescence microscopy, flow cytometry, fluorescence spectroscopy and fluorescence microplate readers. Rhod-5N has a lower binding affinity for Ca2+ (Kd = ~320 µM) than any other BAPTA-based indicator and is suitable for Ca2+ measurements from 10 µM to 1 mM. Like the parent Rhod-2 indicator, Rhod-5N is essentially nonfluorescent in the absence of divalent cations and exhibits strong fluorescence enhancement with no spectral shift upon binding Ca2+.
Chemical structure for Rhod-5N, tripotassium salt
Chemical structure for Rhod-5N, tripotassium salt
CatalogSize
Price
Quantity
210721 mg
Price
 
Physical properties

Dissociation constant (Kd, nM)300000
Molecular weight900.02
SolventWater
Spectral properties

Excitation (nm)557
Emission (nm)580
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