Bumetanide sodium is a potent loop diuretic that acts as a blocker for the sodium-potassium-chloride cotransporter (NKCC). It selectively inhibits NKCC1 and NKCC2, with IC50 values of 0.68 μM and 4.0 μM for hNKCC1A and hNKCC2A, respectively [1] [2].
H100 is a Cl- transport inhibitor, no effect against KCl cotransporter. It has partial effects against both the NaK2Cl cotransporter and the Band 3 anion exchanger.