CBD > D8/D9 Mechanics (New Paper)

Let me see that Chromatography once you finish your Rxn :slightly_smiling_face: you might be a little disappointed…

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Im sure ill be fine.

It might take a few tries but I bet I can get similar results

Everything will be confirmed by @kcalabs

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Just remember academics lie a lot on papers too :woman_shrugging: They’re just trying to finish their PhD in 5 years instead of 6 lol

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Yeah, I haven’t had much luck over the years with reproducing published work. Neither have many others -a study concerning the reproducibility of the top 25 cited cancer papers only found a few that were reproducible.

Anyway, I really don’t like the amount of pTSA they are using. Crazy amount. But maybe at RT that is key.

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I gave it a try and did a small batch.
pTSA in anhydrous Toluol for 46h at RT with max stirring…
I have no COA, but my TLC shows only one spot at d8 reference.
The distille is rock hard. So, looks like I made high d8 instead of d9.

I dried everythink except of the pTSA monohydrate. I assume that the residual water amount lead to the high d8 amount.
Does anybody know how to dry the pTSA efficiently?
I would try to put it in Vac chamber with CaCl2.

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They used monohydrate ptsa

Did you use inert atmosphere?

They did

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I inerted with Argon, yes
My pTSA was pink and clump.
It could definetly be dryer.

I’ve never seen pink ptsa Mines a white clumpy crystal that easily dissolves

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pTSA will turn a bit pink if stored under mild heat and vacuum -in my experience anyway. Hopefully, that isn’t due to degradation… but my slight pink pTSA still works well for d8. Maybe the pink comes from some loss of the water (monohydrate) upon being stored in dry conditions?

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How big of a run did you do?

really? that was the first one i tried right when the paper was posted:

77% d9
11% d8

1000mg scale

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and with dcm got 94% d8 and .1% d9 just like the paper

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Did you run it the exact same way as the paper?

Im trying 1% ptsa

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yes with 2 mol eq

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Hey guys just a quick question, i got hit with some waxy isolste…not sure exact % but i know its present maybe in a 5-10% overall content?

How bad of an impact would this have on a cbd to d9 conversions regarding side reactions and what not…

I have some of @ZenLion material im running

I tried to make D8 and the reaction didn’t go off because of the fats and lipids (the cbd crystallized in my reactor over night after the reaction)

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So even 5% wax in cbd isolate can ruin the entire reaction? Do you think it can cause side reactions?

Did you notice any other issues?

Only information I have is anecdotal and from one experience so take it with a grain of salt.

I did one rxn with waxy isolate and it was subjectively very weak. :man_shrugging:

You’re gonna have to winterize before or after anyways. So why not just winterize before.

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I ran the exact conditions like mentioned in the paper, but scaled it up to 10 gramms CBD in the run. It was distillate and no isolate.
I haven’t expected to reach that high d9 number from the paper in the first run, but to end up with nearly pure d8 is really confusing.

I ordered some CaCl2, will dry out the pTSA and give it another try, to see if residual water is the reason.

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