Butylene GlycolsCynanchumLignansStructure-Activity RelationshipMolecular StructureKineticsStereoisomerismNucleosidesMolecular Sequence DataModels, MolecularOctreotideDose-Response Relationship, DrugSomatostatinAmino Acid SequenceSubstrate SpecificityRNA Cap AnalogsMagnetic Resonance SpectroscopyMolecular ConformationDrug DesignBinding, CompetitiveAffinity LabelsProtein BindingAdenosine TriphosphateProstaglandins, SyntheticAntineoplastic AgentsPain MeasurementInhibitory Concentration 50Computers, AnalogPeptidesReceptors, SomatostatinProtein ConformationCell LineDrug Screening Assays, AntitumorEnzyme InhibitorsCyclic AMP