It is an amine attached to a catechol group thus the name catecholamine, they are naturally occurring hormones and nerotransmitters such as: dopamine, epinephrine & nor-epinephrine.
cat.e.cho.la.mine
(kt-kl-mn, -kô-)
n.
Any of a group of amines derived from catechol that have important physiological effects as neurotransmitters and hormones and include epinephrine,...