Octopamine Clinical data Synonyms OCT, Norsympathol, Norsynephrine, para-Octopamine, beta-Hydroxytyramine, para-hydroxy-phenyl-ethanolamine Physiological data Source tissues invertebrate nervous systems; trace amine in vertebrates Target tissues system-wide in invertebrates Receptors TAAR1 (mammals) OctαR, OctβR, TyrR (invertebrates) Precursor tyramine Biosynthesis tyramine β-hydroxylase; dopamine β-hydroxylase Metabolism N-acetyltransferases; phenylethanolamine N-methyltransferase Identifiers IUPAC name (RS)-4-(2-amino-1-hydroxy-ethyl)phenol CAS Number 104-14-3 PubChem CID 4581 IUPHAR/BPS 2149 ChemSpider 4420 KEGG C04227