the human red blood cell ghost [ 3h ] nimodipine-labelled sites also interacted with the inorganic ca2+-antagonist la3+ ( increase in the number of binding sites ) , and were allosterically regulated by the optical enantiomers of the phenylalkylamine-type ca2+-antagonists ( e.g . verapamil , desmethoxyverapamil , methoxyverapamil ) .
C0042523
verapamil
C0016986
methoxyverapamil