5-(2-methylaminopropyl)benzofuran (abbreviated 5-MAPB) is a synthetic entactogen of the substituted benzofuran class of chemicals, which are known to produce euphoric, entactogenic, stimulating and mildly hallucinogenic effects. These include such MDA-inspired substances as 5-APB, 6-APB and 5-EAPB, among others. 5-MAPB is the N-methylated form of 5-APB, analogously to how MDMA is the N-methylated form of MDA.
This compound is known for its stimulating, euphoric and entactogenic effects that is capable of acting a quasi-substitute for MDMA proper, which has resulted in its rise in popularity as a research chemical that is easily accessible through the use of online vendors. It has been sold as a designer drug since 2010.
Legal status in US: 5-MAPB could be considered an analogue of MDA and therefore would be covered under the Federal Analogue Act if intended for human consumption.
The Borax Combo is a mix of psychedelic and MDMA-like research chemicals used to mimic the effects of MDMA. The most commonly affiliated substances are the entactogen 5-MAPB and the psychedelic 5-MeO-MiPT.