title: Conformation of histamine derivatives. 1. Application of molecular orbital calculations and nuclear magnetic resonance spectroscopy.
mesh_terms: D002413:Cations, Divalent; D002414:Cations, Monovalent; D006632:Histamine; D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D008968:Molecular Conformation; D013057:Spectrum Analysis; D013237:Stereoisomerism
chemical_list: D002413:Cations, Divalent; D002414:Cations, Monovalent; D006632:Histamine