A

David

Darling

catecholamines

Catecholamines are a group of chemical substances, including adrenaline (epinephrine), noradrenaline (norepinephrine), and dopamine, which serves various roles (mainly as neurotransmitters) in the functioning of the sympathetic and central nervous systems. Chemically, all contain a benzene ring with adjacent hydroxyl groups and an amine group on a side chain.