PiperazinesMolecular StructureNitrogen IsotopesStructure-Activity RelationshipNitrogen FixationHydrogen BondingModels, MolecularMolecular ConformationAscarisStereoisomerismBuspironeMagnetic Resonance SpectroscopyCrystallography, X-RayNitrogenCoordination ComplexesAminesAminationBinding SitesDesigner DrugsReceptors, sigmaNitrogen CompoundsSerotonin Receptor AgonistsChemical PhenomenaModels, ChemicalChemistryMolecular Sequence DataNitrogen CycleEstersBlood Urea NitrogenNitrogen DioxideAntinematodal AgentsCatalysisOxidation-ReductionQuaternary Ammonium CompoundsElectron Spin Resonance SpectroscopyHistidineKineticsCopperMass SpectrometryProtein ConformationReceptors, SerotoninPyronineHydrogen-Ion ConcentrationMitragynaProchlorperazineAmino Acid SequenceLigandsProtein BindingSpectrometry, Mass, Electrospray IonizationSpectrophotometryQuantum TheoryReactive Nitrogen SpeciesSerotonin AntagonistsReceptors, Serotonin, 5-HT1Physicochemical Phenomena8-Hydroxy-2-(di-n-propylamino)tetralinSpectrum AnalysisIndicators and ReagentsAmidesOrganometallic CompoundsTrazodoneChemistry, PhysicalProtonsCatatoniaNitrogen OxidesN-Methyl-3,4-methylenedioxyamphetamineDopamine Uptake InhibitorsDelavirdineOxygenReceptors, Dopamine D3PII Nitrogen Regulatory ProteinsCarbonBiological ProductsPiperidinesAnthelminticsPyrantelAscariasisRadioligand AssayTrimetazidineThermodynamicsSerotonin 5-HT1 Receptor AgonistsSerotoninIsocyanatesAmmoniaNitratesImidazolesReceptor, Serotonin, 5-HT1ADose-Response Relationship, DrugReceptors, Dopamine D2Dopamine Plasma Membrane Transport ProteinsBisbenzimidazoleBase SequenceMonoacylglycerol LipasesSpectrometry, Mass, Fast Atom Bombardment3,4-MethylenedioxyamphetamineCyclizationAnti-Anxiety AgentsTetrahydronaphthalenesChromatography, High Pressure LiquidFertilizers