4-HO-DET, also known as 4-hydroxy-diethyl-tryptamine, CZ-74, is a hallucinogenic drug and psychedelic compound of moderate duration. 4-HO-DET is a substituted tryptamine, structurally related to psilocin, ethocybin, and 4-HO-DIPT.[1]
4-HO-DET is the N,N-diethyl analog of psilocin. The acetic acid ester of 4-HO-DET is known as 4-AcO-DET and the phosphoric acid ester of 4-HO-DET is known as 4-phosphoryloxy-DET, CEY-19, or ethocybin. These compounds may likely be prodrugs of 4-HO-DET as has been shown with the acetate and phospate esters of other methylated tryptamines such as psilocin.[2]
4-HO-DET received the lab code CZ-74 in the late 1950s by the inventors of the substance, Albert Hofmann and Franz Troxler. The substance was used together with its phosphoryloxy-analog ethocybin in human clinical trials in the 1960s by the German researchers Hanscarl Leuner and G. Baer. It was later explored by Alexander Shulgin in his 1997 book TiHKAL.
TiHKAL reports moderate effects at 10–25 mg ingested orally.[3]
4-HO-DET produces psychedelic effects similar to LSD and psilocybin.
4-HO-DET is unscheduled in the United States, but purchase, sale, or possession for human consumption could be prosecuted under the Federal Analogue Act.[4]
Sveriges riksdags health ministry Statens folkhälsoinstitut classified 4-HO-DET as "health hazard" under the act Lagen om förbud mot vissa hälsofarliga varor (translated Act on the Prohibition of Certain Goods Dangerous to Health) as of Nov 1, 2005, in their regulation SFS 2005:733 listed as 4-hydroxi-N,N-diethyltryptamin (4-HO-DET), making it illegal to sell or possess.[5]