title: Identification of natural coumarins by Nmr spectroscopy.
mesh_terms: D003374:Coumarins / Q000032:analysis*; D005663:Furans; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D008968:Molecular Conformation; D010944:Plants; D011522:Protons; D011714:Pyrans; D013053:Spectrophotometry / Q000295:instrumentation
chemical_list: D003374:Coumarins; D005663:Furans; D011522:Protons; D011714:Pyrans