has role is protonated form of independent continuant organic cation (R)-adrenaline ammonium ion derivative (R)-adrenaline(1+) An organic cation that is the conjugate acid of (<i>R</i>)-adrenaline, obtained by protonation of the amino group; major species at pH 7.3. CHEBI:71406 (R)-adrenaline (R)-adrenaline cation (2R)-2-(3,4-dihydroxyphenyl)-2-hydroxy-N-methylethanaminium L-epinephrine(1+) (2R)-2-(3,4-dihydroxyphenyl)-2-hydroxy-N-methylethanaminium metacyc.compound:L-EPINEPHRINE L-epinephrine cation human metabolite