SemicarbazonesPyridinesMolecular StructureStructure-Activity RelationshipNADNADPImidazolesNicotinamide MononucleotideMagnetic Resonance SpectroscopyStereoisomerismOxidation-ReductionNicotinic AcidsReceptor, Metabotropic Glutamate 5KineticsCarcinogensIndicators and ReagentsNADP TranshydrogenasesPicolinesHeterocyclic CompoundsChromatography, High Pressure LiquidChemistryCyclizationChemical PhenomenaCyclic P-OxidesMolecular ConformationSpectrophotometry, UltravioletAminesIminesCatalysisMolecular Sequence DataMutagens