S3226 is a potent and selective NHE3 (NHE-3) inhibitor (IC50 = 20 nM/human NHE3, 3.6 µM/human NHE1, 80 µM/rabbit NHE2) for studying NHE3 physiological as well as pathophysiological roles in kidney and gastrointestinal disorders in vitro and in animal models in vivo.
S3226 is also known as {3-[2-(3-guanidino-2-methyl-3-oxo-propenyl)-5-methyl-phenyl]-N-isopropylidene-2-methyl-acrylamide dihydro-chloride}. S3226 is used to explore the physiological and pathophysiological functions of sodium-hydrogen exchanger 3 (NHE3) in animal models. It is a bismethacryloyl guanidine derivative.