title: Zwitterion formation upon deprotonation in L-3, 4-dihydroxyphenylalanine and other phenolic amines.
mesh_terms: D004295:Dihydroxyphenylalanine; D004298:Dopamine; D004837:Epinephrine; D006863:Hydrogen-Ion Concentration; D009638:Norepinephrine; D011199:Potentiometry; D011522:Protons; D014439:Tyramine; D014443:Tyrosine
chemical_list: D011522:Protons; D014443:Tyrosine; D004295:Dihydroxyphenylalanine; D004298:Dopamine; D009638:Norepinephrine; D014439:Tyramine; D004837:Epinephrine