class=skin-invert-image|thumb|80px|Catechol
class=skin-invert-image|thumb|80px|Catechol
A catecholamine (; abbreviated CA), most typically a 3,4-dihydroxyphenethylamine, is a monoamine neurotransmitter, an organic compound that has a catechol (benzene with two hydroxyl side groups next to each other) and a side-chain amine.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).