Definition: One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from TYROSINE and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action.
dopexamine [ Dopacard,Elan brand of dopexamine dihydrochloride,FPL 60278,Ipsen brand of dopexamine dihydrochloride,dopexamine dihydrobromide,dopexamine dihydrochloride ] RN given refers to parent cpd; structure given in first source