Hello,
I have problems finding a seller for NMP in the EU, and the chinese don't seem to have it.
I've seen instructions on making 4-mmc with nmp, which surprised me, because before I've found this forum I knew that using NMP as a solvent gives you much higher yields because the freebase...
Mephedrone hydrobromide synthesis from 2-bromo-4'-methylpropiophenone with n-methylpyrrolidone
https://bbgate.com/threads/synthesis-of-mephedrone-in-nmp-large-scale.231/