four benzodiazepines produced sensitization of atria to adenosine and no alteration of responses to 2-chloroadenosine ( a purine agonist which is not a substrate for adenosine uptake or degradation ) , the rank order of potency being diazepam ( pki = 5.6 ) much greater than oxazepam ( pki = 4.6 ) greater than clonazepam ( pki = 4.3 ) = lorazepam ( pki = 4.2 ) .
C0005064
benzodiazepines
C0029997
oxazepam