SPECIFICATIONS
Excitation:
525 nm 
Emission:
545 nm 
Kd:
7 mM
MW:
1336
Solubility:
H2O
Synonyms: Asante Potassium Green, Ion Potassium Green, APG, IPG, APG-4, IPG-4
Product code: 10 x 50ug: 3023F/ 500ug: 3023C
product description
ION Potassium Green – 4 (IPG-4) is a yellow-green fluorescent, intracellular potassium (K⁺) indicator with Ex/Em: 525 nm/545 nm and a high-sensitivity to detect small changes in K⁺ concentration. IPG-4 has the highest affinity (Kd = 7 mM) among IPG analogues – IPG-2 (Kd = 18 mM) and IPG-1 (Kd = 50 mM).
IPG-4 TMA⁺ salt is a membrane impermeable form of IPG-4 that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection or other methods. IPG-4 has been successfully used as a sensor for extracellular K⁺.
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