slow inward calcium channels in canine cardiac membranes were affinity labeled with the calcium channel analogue , [ 3h ] o-ncs [ 2,6 dimethyl-3,5-dicarbomethoxy-4- ( 2- isothiocyanatophenyl ) -1 , 4-dihydropyridine ] , in the presence and absence of cold o-ncs or nicardipine .
C0012315
dihydropyridine
C0028005
nicardipine