4-Acetoxy-MET

4-Acetoxy-MET (4-Acetoxy-N-methyl-N-ethyltryptamine), also known as metacetin or 4-AcO-MET, is a hallucinogenic tryptamine. It is the acetate ester of 4-HO-MET, and a homologue of 4-AcO-DMT. It is a novel compound with very little history of human use. It is sometimes sold as a research chemical by online retailers.

4-Acetoxy-MET

Names
IUPAC name 3-(2-Ethyl(methyl)aminoethyl)-1H-indol-4-yl acetate
Other names 4-Acetoxy-MET; Metacetin; 4-Acetoxy-N-methyl-N-ethyltryptamine
Identifiers
CAS Number	1445751-40-5
3D model (JSmol)	Interactive image
ChemSpider	26633897
PubChem CID	71308138
UNII	PCJ17NV1P0
InChI InChI=1S/C15H20N2O2/c1-4-17(3)9-8-12-10-16-13-6-5-7-14(15(12)13)19-11(2)18/h5-7,10,16H,4,8-9H2,1-3H3 Key: OMDKHOOGGJRLLX-UHFFFAOYSA-N InChI=1/C15H20N2O2/c1-4-17(3)9-8-12-10-16-13-6-5-7-14(15(12)13)19-11(2)18/h5-7,10,16H,4,8-9H2,1-3H3 Key: OMDKHOOGGJRLLX-UHFFFAOYAM
SMILES CCN(C)CCc1c[nH]c2c1c(ccc2)OC(=O)C
Properties
Chemical formula	C15H20N2O2
Molar mass	260.337 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

It is expected that the compound is quickly hydrolyzed into the free phenolic 4-HO-MET by serum esterases, but human studies concerning the metabolic fate of this drug are lacking. There is proof that this is a very active substance.