05:36:38 GMT-0600 (CST)

In the late 1960s the precursors for DMT synthesis were freely available and syntheses were available in books such as The Turn-On Book (ibid) and The Psychedelic Guide to Preparation of the Eucharist (Brown, 1968). The process for synthesising DMT could be easily modified to give the close structural analogue DET, and both materials were freely available prior to the imposition of restrictions on the starting materials. These precursors became increasingly difficult to obtain in the United States after the enactment of State and Federal laws from 1966 to 1969 making the possession of DMT and DET a criminal offence