Well my village is rural, if I went to the big city I may be able to find more 99% medical or industrial isopropanol.
I have advantages others don't: I can safely distill isopropanol [to 91%], methanol from windshield washer fluid, I have solvents like 95% ethanol, ethyl acetate, toluene, xylene, petroleum ether, chloroform, pyridine, octane, acetone, 2-butanone, and others But if I publish anything I want it to be of practical value to others. So I probably wont be using pyridine, my isopropanol-toluene azeotrope, or exclusively using isopropanol in grades not widely available.
It's been 11 months since I finished off my good mescaline and it'll be another month before I can use any drugs, so I've been thinking about making more mescaline. Once I have a jar of mescaline•HCl if I'm still locked indoors I may get playful and fill in gaps in our knowledge of the solubilities of neutral mescaline fumarate, stoichiometric mescaline bifumarate, and possibly others.
I anticipate true mescaline fumarate will be maddeningly hygroscopic just like true DMT fumarate but I expect the bifumarate to be able to form crystals freely and have fair to good recrystallization properties.
With two anhydrous acetone washes of powdered desiccated mescaline•HCl I get a nice off-white product with little alkaloid loss but if I move to single solvent recrystallization with isopropanol the loss is notable. I'd like a better recrystallization option that would allow for easy solvent recycling, so I don't force other people to accumulate isopropanol-toluene azeotrope.
It's funny, I routinely go several months without psychedelics but when a doctor imposes it. Man. I want to take a gram of mescaline!