IPG-2 TMA⁺ Salt


IPG-2 is a yellow-green fluorescent, potassium indicator. Membrane-impermeable. Lower potassium affinity than IPG-4, and higher affinity than IPG-1.

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525 nm 


545 nm 


18 mM


1131 g/mol



Synonyms: ION Potassium Green – 2, Asante Potassium Green – 2, APG-2
Product code: 10 x 50ug: 3013C / 500ug: 3013F

product description

ipg-2 (ion potassium green - 2) salt, a fluorescent potassium indicator, banner

ION Potassium Green – 2 (IPG-2) 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-2 has a higher affinity (Kd = 18 mM) than IPG-1 (Kd = 50 mM) and lower affinity than IPG-4 (Kd = 7 mM).

IPG-2 TMA⁺ salt is a membrane impermeable form of IPG-2 that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection or other methods.