title: Studies on the proton magnetic resonance spectra in aromatic systems. I. Discussions on the para-disubstituted-1-substituted-3,4-dimethoxy- and 1-substituted-3,4-methylenedioxy benzene derivatives.
mesh_terms: D001555:Benzene Derivatives; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D011522:Protons
chemical_list: D001555:Benzene Derivatives; D011522:Protons