Magnetic Resonance Spectroscopy nuclear magnetic resonance spectroscopy article 158 chemistry 116 chemical structure 54 unclassified drug 46 Molecular Structure 36 nonhuman 36 Nuclear magnetic resonance spectroscopy 32 Quantum Theory 32 methodology 32 quantum theory 32 isolation and purification 26 Humans 24 Models, Molecular 24 Polysaccharides 24 methylation 24 priority journal 24 metabolism 22 synthesis 22 Molecular Conformation 20 controlled study 20 polysaccharide 20 seaweed 20 stereoisomerism 20 Animals 18 Glycosides 18 Seaweed 18 conformation 18 human 18