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Kind of the other side of this, but what are the duration of common synthetic cannabinoids? Like from peak to coming down? I'm always a little off from cannabis for like 3 hours, so less would be good

Maybe I missed it on the forums, but a guide to making a steel reactor for such hydrogenations would be a huge help to all. Afaik precious metal catalyst hydrogenations are how the big dogs do it in the Netherlands. Read how maybe 10 or less years back police over there found a trailer full of...

Thank you! I doubt I'd ever go at this scale, but I'd probably just clean it up with the bisulfite addiction, I believe that works with ketones.

So I'm not a chemist, but I am fairly sure this should work, probably with very low yields but it should work. https://www.thevespiary.org/rhodium/Rhodium/Vespiary/talk/index.php/topic%2c606.0.html This should be for OPPPP, but the general idea is the same. Erowid https://erowid.org ›...

What is the cas of the second to las chemical, 1-(p-methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroiso-quinoline, the hydrobromide salt. Really hard time finding this. It would be super nice to be able to order this, then finish as they say. Formic acid and phosphoric acid, if I recall correctly...

So just a quick opinion question, which I know varies by substance, network of customers, etc But if someone is selling mdma, what would be the time estimate to get rid of a kilo? Seems like a while unless you live in a real big city.

I think someone asked this, but I didn't see a reply. Can the amount of water be reduced in the initial step, with all other ratios staying the same? And can one use diethyl ether in place of dcm for all uses of dcm here?

I'm wondering if a Wacker oxidation of safrole to mdp2p can take place in a 304 steel vessel, with the knowledge that it will corrode, or if only 316 steel will work. Sheet metal is usually 304, I think, and I would be real nice if you could use this to make a reaction vessel for the Wacker. I...

So I've read that one can produce 6 MAM from glacial acetic acid, and catalytic amounts of sulfuric acid. Does this work? Also, does this work for other acids? Like propionic acid?

Title says it all. Just looking for a general list of countries with otc codeine. I want to emigrate sometime soon, next 5 to 10, and that will be a nice thing to have, but not the main reason why I would move, obviously.

There's a paper out there there where they react morphine and codeine with colloidal palladium to form hydromorphone and hydrocodone in good yields, like 70% or so. Not a bad option if you can get otc codeine, but the palladium is expensive, and idk how to make colloidal palladium.

I don't know how recreational this would be, as I thought delta antagonists weren't going to be recreational. But im also not a pharmacologist.

Just wanted to say that, unless I am missing something, Pushing Taboo is outrageously expensive. 50g of mdma for $1000 usd? Unless it was in another currency, but they used the dollar sign

I mean, of course it varies on one's experience, knowledge, etc. But at a certain point, there are going to be physical limitations that either requires more people, or powered equipment. To maybe be more concise, assuming one is an average chemist, what is a general max size that one can...

I'm wondering how large one's lab can be, and the amounts it can handle, weight wise, with only one person. Amphetamines specifically There is the old, easily found online page on large scale methamphetamine manufacture that seemed to handle a few pounds at a time. I wonder how large one can...