they include one site for molecules of the 1,4-dihydropyridine serie such as nitrendipine , nifedipine or pn200-110 and one site for a chemically heterogenous group of compounds comprising verapamil , d600 and desmethoxyverapamil , bepridil and diltiazem .
C0012315
dihydropyridine
C0028127
nitrendipine