CBD > D8/D9 Mechanics (New Paper)

Hi guys and gals

Maybe this video has already been posted here, I found it very interesting and maybe it can be of help to somebody.

Have a good day

2 Likes

Where did you end up on the ratios? Thatā€™s a good looking separation!

Iā€™m also curious, how are you guys making your standards?

I weigh my CBD or any other cannabinoid on a precision scale and dilute it with ethanol to 5mg/ml
You can use other solvents. Its important that it evaporates fast.
I have a lot of etho on hand, thats why I use it

3 Likes

Deleted meant to dm

1 Like

Kinda ambiguous but, itā€™s a nice start into it.

@Labwork
Have you try 5% ether / 95% pet ether on standard silica 60 TLC plates?
Ive seen good seperation with CBD D9 and D8 like that however I did not try with cbnā€¦

No, I have no pet ether on hand.
I tried hexane, heptane, ethyl acetate, acetic acid, polar express, ethanol, water, acetone, diethyl ether, toluene.

Mixed them together according to all the papers I found on researchgate about cannabinoid TLC.

I stopped trying around, because DEE:hexane was sufficient for my needs.

Chloroform with dichlormethan or 1.2-dichlorethan was mentioned in some papers.
Toluene-chloroform-methanol 100:10:1 also.

3 Likes

only D8 no D9 This way.

1 Like

You tried it? I was curious myself, did you dry your toluene appropriately?

Drying the toluene isnā€™t going to do anything when you use monohydrate PTSA

2 Likes

i did not dry toluene and got 95% d8

2 Likes

Yeah thatā€™s what I assumed, but I seemed to remember reading it was dried, however youā€™re correct they did specify mono hydrate didnā€™t they

I wonder if they dried the ptsa

They never said they did but thereā€™s no way they got that high d9 with that much water in it

Either that or there analytics are screwed up which a few of us think they are

2 Likes

D9 is really a bitch to get it right in the high % numbers tried 10 ways but still not in the 90+ clubā€¦

2 Likes

What were the results>?

  • Toluene-chloroform-methanol 100:10:1 also =

  • hexane was sufficient for my needs =

Hi dutchmulti
I am from holland
Is it possible to send you my email
Because of my lab in Nederland
Greats Adam

1 Like

To have contact and to talk oabout cbd to

1 Like

Supposedly neat chloroform works pretty well too. I have certainly read about TCM:MeOH:H2O systems giving good separation as well. No personal experience

2 Likes

Did you use the crazy high 2molar ratio of pTSA to CBD also?

1 Like

what do you mean by " crazy high 2molar"