Well I've seen GBL on sale on internet at A LOT of places, and besides if interested in that PM me then I can arrange something for you ;-).
Anyway GHB I have a synthesis for that too, let me know if you are interested as the same with all other things and I'll make an online synthesis with photo's in the topic and upload the pdf.
In there are the ratio's and amounts etc etc etc.
For GHB in short you need GBL and NaOH, NaOH needs to be solid and can be found as drain cleaner.
GBL is hard to find but in some country's it is a part of nail polish remover.
Or grafitti remover, look around and if you find it you can extract it.
Mescaline concerning you can make that the same as amphetamine but you need another precusor, if you change it you can do the same procedure and get mescaline or 2CB as a product.
Same goes for this one I also have a synthesis with pictures on this one
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another method is to grind the cactus and then make a mush of it and then mix it with toluene or any other non polar solvent and then evaporate off the solvent and be left with crude dirty mescaline, then one can do an acid/base purification.
I'll explain that later if there is anyone interested in that.
For the sake of clearing everything up, I was a guy who made explosives, A LOT and made a lot of them and then I started pyrotechnics then I started making drugs as I also started at the same time a chemical study in organic chemistry, so now I still have the HE knowledge and the organic so, almost every organic question can be pointed to me :wink: