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Elemental AnalysisCarbon PowderSpectrophotometric DeterminationStability ConstantsKinetics and MechanismBenzopyran CompoundsElectronic SpectralMolecular MassAbsorption SpectrometryNMR SpectraMorphine AlkaloidsPolymer GelsSpectral DataReaction ConditionsSpectrographic AnalysisPowder MixedSchiff BasesMETHYLVinca AlkaloidsDipolar Cycloaddition