Tryptamine is a monoamine compound that is common precursor molecule to many hormones and neurotransmitters. The most well-known tryptamines are serotonin, an important neurotransmitter, and melatonin, involved in regulating the sleep-wake cycle
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Title: Aryl acylamidase of monkey brain and liver: response to inhibitors and relationship to acetylcholinesterase Oommen A, Balasubramanian AS Ref: Biochemical Pharmacology, 27:891, 1978 : PubMed