at clinically achievable concentrations ( 10 ( -9 ) to 5 x 10 ( -6 ) m ) , tolbutamide and tolazamide are in vitro inhibitors of ca2+-transporting atpase activity in sarcolemma-enriched rabbit myocardial membranes ( sulfonylurea ic50 , 10 ( -7 ) m ) .
C0040374
tolbutamide
C0038766
sulfonylurea