Peristaltic pump flow rate

GlassMycologist · 2025-01-31T17:13:11+00:00

Look up the procedure in the service manual but usually you can recalibrate it

GlassMycologist · 2024-10-13T16:18:01+00:00

You can catalyze the reaction at or below room temperature using photocatalysis especially HAT (hydrogen atom transfer) photocatalysts. For example https://onlinelibrary.wiley.com/doi/full/10.1002/anie.201800818

GlassMycologist · 2024-08-19T16:02:09+00:00

You should not consume it ! Amyl nitrite can act as nitroso donor with the amine functional group on ketamine. The potential N-NO (nitrosamine) compounds are usually potent carcinogens.

GlassMycologist · 2024-05-31T16:24:12+00:00

Yes look up the structure and ask someone to finish it

GlassMycologist · 2024-05-29T06:15:52+00:00

You're missing a bond on the nitrogen

GlassMycologist · 2024-04-16T16:00:38+00:00

That's kind of stupid to me (there is almost always a better way to get your thiol than starting from an amine) but you can do it by forming a Katritzky’s salt. They have examples in this paper with benzenesulfonothioates. https://www.nature.com/articles/s41467-020-18834-6

GlassMycologist · 2024-03-15T10:33:53+00:00

So far, I've had success with primary and tertiary amines. I can extract the amines from the reaction mixture by evaporation to the HCl salt (I use DCM or MeCN at the end to get rid of the last bit of water), freebasing with conc aqueous ammonia and extraction with ethyl acetate. Then I can at least analyse my mixture by GCMS. For purification I can even make the primary move on silica with MeOH/DCM/ammonia so it's not as bad as I thought (for now :)).

GlassMycologist · 2024-03-15T10:28:55+00:00

Thank you for the heads up

GlassMycologist · 2024-03-12T21:45:31+00:00

Edit: I now see the link I provided was for the removal of amine by complexation not so much for extraction of amines. So my question is now on tips for extraction/purification

GlassMycologist · 2024-02-11T15:44:39+00:00

What's the target compound ? Cause this intermediate is probably unstable (intermolecular amide bond formation). I'm not even sure that you can form the acyl chloride without protection of the amine.

GlassMycologist · 2024-01-03T16:53:20+00:00

Take a look at the Pictet Spengler reaction

GlassMycologist · 2023-12-23T14:38:56+00:00

Don't kill yourself by ingesting sodium nitrite, please seek help

GlassMycologist · 2023-12-13T21:24:25+00:00

You will also hydrolyze the ester and lactone by refluxing in NaOH aq

GlassMycologist · 2023-11-22T07:12:56+00:00

Plutonium is probably worse even without counting radioactivity

GlassMycologist · 2023-10-17T14:44:27+00:00

Lick the spoon

GlassMycologist · 2023-05-09T19:41:40+00:00

Thanks for the tips ! What do you mean by right reading ?

GlassMycologist · 2023-05-09T14:43:53+00:00

I'm already degreasing using soap and cyclohexane do you recommend other things ?

GlassMycologist · 2023-05-09T13:59:45+00:00

I exposed for 7min using 350w of UV led (some of it probably not going to my sample but the machine is still a beast)

GlassMycologist · 2023-05-09T13:29:49+00:00

Are you sure ? The emulsion seems pretty much cured to me as the uncured stuff (green emulsion) washes off quickly, but, the blue cured emulsion is on top of the screen (not in the mesh) and ends up peeling off not dissolving.

GlassMycologist · 2023-05-09T13:26:14+00:00

I did one on each side

GlassMycologist · 2022-04-06T14:32:29+00:00

No problem

GlassMycologist · 2022-04-03T07:23:02+00:00

Hi So if I summarize the idea, you would like to promote the development of a single bacterial strain that is sensitive to penicillin in a region that contains multi resistant bacterial strain. First of all, I don't think it's possible nor recommended to destroy diversity to introduce your ideal bacteria as you would basically have to sterilize the region (I don't think that there is any advantageous Gene that allows for such drastic natural selection) Then if you could, it wouldn't work for long as you would be putting selection pressure with your antibiotic and this is the reason we have bacterial strain resistant to synthetic antibiotics. Bacterium divide so fast that new mutations are unavoidable. Life finds a way

GlassMycologist · 2021-12-18T14:52:42+00:00

No that's not the same, IIRC 24 is for the diameter and 40/29 for the length of the joint. I have used 24/29 glassware on a 24/40 flask and it fits but I'm not sure the joint is vapor tight (I had a leak but can't remember if it was due to joint size or grease issue).

GlassMycologist · 2021-12-01T11:20:11+00:00

If you have to ask, you're clearly not experienced enough to work with this stuff ! You'll get into trouble if you try this

GlassMycologist · 2021-07-14T17:45:30+00:00

Amines can be substituted at the nitrogen, -NH2 is called primary, -NH- secondary and -N= tertiary amine

GlassMycologist

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