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.
do carpamine [ TA 870,N-(N-acetyl-L-methionyl)-O,O-bis(ethoxycarbonyl)dopamine,TA-8704,docarpamine ] a dopamine prodrug; RN given refers to (S)-isomer; structure given in first source