How did the use of 6-APB start?

6-APB (6-(2-aminopropyl)benzofuran) was first created by David Nichols and his team in 1993. The drug is also often referred to as Benzo Fury (benzofury). At the time, David and his team were doing research in hopes of finding less toxic substances that mimic the effect of MDMA (MDMA analogues). That 6-APB is less toxic than MDMA  has never been proven. 6-APB is derived from the substance MDA. During the breakdown of MDMA  in the body, a small part is converted into MDA. 6-APB is said to give more visual (hallucinogenic) effects than MDA and  MDMA. For several years now, a small part of the visitors of the Unity stand indicate that they use 6-APB. It was offered online at the same time as the entactogens 5-APB, 5-MAPB and 6-MAPB, among others. All three therefore have a similar chemical structure and somewhat similar function.