The hallucinogenic tryptamine is 4-Acetoxy-MET (4-Acetoxy-N-methyl-N-ethyltryptamine), also known as metacetin, or 4-AcO-MET. It is the 4-HO-MET acetate ester, and the 4-AcO-DMT homologue. With very little experience of human use, it is a novel compound. Online retailers also market it as a testing chemical.
Serum esterases are required to rapidly hydrolyze the compound into the free phenolic 4-HO-MET, but human studies concerning the metabolic fate of this drug are missing. There is evidence that this is a material which is very active.