Mephedrone

Mephedrone, an artificial stimulant, was first synthesised in 1929 but did not become widely known until it was rediscovered in 1999–2000. At that point, producing
Mephedrone, an artificial stimulant, was first synthesised in 1929 but did not become widely known until it was rediscovered in 1999–2000. At that point, producing