the role of structural features of sulmazole , an imidazo ( 4,5-b ) pyridine , in its inotropic action was examined by comparison with its reduced ( 4-methylthiophenyl ) analog emd 46512 and the corresponding imidazo ( 4,5-c ) pyridine isomers isomazole and emd 41000 on isolated guinea-pig papillary muscles and right atria and on na , k-atpase and phosphodiesterase iii isolated from guinea-pig hearts .
C0225844
right atria
C0018787
hearts