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Cal-670™, potassium salt
Calcium measurement is critical for numerous biological investigations. Fluorescent probes that show spectral responses upon binding calcium have enabled researchers to investigate changes in intracellular free calcium concentrations by using fluorescence microscopy, flow cytometry, fluorescence spectroscopy and fluorescence microplate readers. Cal-670™ is a near infrared (NIR) calcium indicator with maximum emission at ~675 nm. It can be well excited with the red lasers at 633 nm or 647 nm with a moderate calcium affinity of Kd ~853 nM. Cal-670™ is one of the very few calcium indicators that can be potentially used for in vivo imaging since it has a NIR fluorescence.
Cal-670 was incubated with buffer that contains different concentration of free Ca2+. The fluorescence was monitored on fluorimeter GeminiXS (Molecular Device) at 650 nm/ 675 nm.
Cal-670 was incubated with buffer that contains different concentration of free Ca2+. The fluorescence was monitored on fluorimeter GeminiXS (Molecular Device) at 650 nm/ 675 nm.
CatalogSize
Price
Quantity
2045510x50 ug
Price
 
Physical properties

Dissociation constant (Kd, nM)853
Molecular weight1587.99
SolventWater
Spectral properties

Excitation (nm)667
Emission (nm)680
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