WHAT DOES WHAT IS THE DIFFERENCE BETWEEN 3-MMC AND 2-MMC? MEAN?

The first documented seizure of mephedrone transpired in 2007. French police sent a tablet they assumed to generally be ecstasy for Investigation. However, the chemical construction turned out being different.Mephedrone. "Not for human use. For technological use only. Purity: ninety nine+ %" Mephedrone is one of hundreds of designer medications or