title: Structure-activity studies on nifedipine in isolated cardiac muscle.
mesh_terms: D000818:Animals; D002415:Cats; D003864:Depression, Chemical; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D007536:Isomerism; D009200:Myocardial Contraction / Q000187:drug effects; D009543:Nifedipine / Q000031:analogs & derivatives / Q000494:pharmacology*; D010210:Papillary Muscles / Q000187:drug effects; D011725:Pyridines / Q000494:pharmacology*; D012995:Solubility; D013329:Structure-Activity Relationship
chemical_list: D011725:Pyridines; D009543:Nifedipine