BupranololReceptors, Adrenergic, beta-3Adrenergic beta-3 Receptor AntagonistsAdrenergic beta-1 Receptor AntagonistsAdrenergic beta-3 Receptor AgonistsAdrenergic beta-1 Receptor AgonistsAdrenergic beta-AntagonistsPropanolaminesButoxamineReceptors, Adrenergic, betaAdrenergic beta-AgonistsPindololReceptors, Adrenergic, beta-1Muscle RelaxationStereoisomerismMyocardial ContractionStimulation, Chemical