AcetamidesEtanidazoleNitrofuransIodoacetamideAcetanilidesFormamidesCryoprotective AgentsPhenoxypropanolaminesHaresAmidesAdrenergic beta-3 Receptor AgonistsHydrocarbons, FluorinatedAmidohydrolasesThioureaIndoleacetic AcidsUreaDimethyl SulfoxideSemen PreservationMolecular StructureIodoacetatesAlkylationStructure-Activity RelationshipGlycerolCryopreservationFluorine RadioisotopesPyrazolesReceptors, Opioid, kappaPseudomonasPyrimidinesCell Membrane PermeabilityMagnetic Resonance SpectroscopyGas Chromatography-Mass SpectrometryThiazolesReceptors, GABA-AStereoisomerismCarbon RadioisotopesBinding SitesKineticsWaterPositron-Emission TomographyCulture MediaIndoles