Jamur wrote:From reading around here it seems that LSH inevitably converts to LSA.
During the extraction? Nope, definitely not.
Strange that this myth seems so widespread here. Yes, LSH is more delicate, that's why originally Hofmann didn't discover it, but since then many people made extractions preserving it successfully (incl Hofmann), as can be read in a plethora of papers.
Again requote from what Benzyme already requoted, from the history thread:
Quote:which readily hydrolyze to ergine and isoergine during the course of most extractions (Hofmann 1971)
("most", not all)You just have to make sure, that during the alkaline step you do not take any strong base (e.g. no NaOH), no high PH, and make this step as short in duration as possible (although this does seem to be the least important point, when looking at Gröger's work).
In acidic environments OTOH LSH seems pretty stable, unless too acidic, which pushes epimerization (but which at most converts about half of it to iso-LSH).
BTW: I wouldn't call
Kash's tek "LSA tek", as it
does not only deliver pure LSA. To get pure LSA, IMHO you would need to use e.g. a column, which some people here did indeed.
Unfortunately Kash called it "Pure LSA Extraction", although he knew it isn't, which could have also added to the LSA myth, as surely quite some people were thinking that this is now how pure LSA feels like.
LysergicMissioner wrote:do you have any recommendations of other articles or personal tips on isolating LSH/LSA?
E.g. you can read my ramblings on my corresponding thread, there's a lot of info about LSH, and many related papers mentioned. Maybe I should make a composition.
https://www.dmt-nexus.me/forum/default.aspx?g=posts&t=75332E.g. you could do it like Gröger did. This extraction method seems to preserve most of the LSH. Interestingly it is kinda similar to Kash's tek by using acetone as main solvent, but Gröger stays at PH 8-9 during extraction (Kash goes higher, which is bad for LSH). BTW: ergolines in general do not like high PHs...
Again Gröger's tek:
* Ground the seeds to a fine powder
* Washed (defat) 5 times with Naphtha (Petroleum-ether)
* About 0.5g of the powder in 10ml (2g tartaric acid in 30ml water + 70ml acetone) shaken for 1 hour (repeated an additional 2 times, for 3 runs in total)
* Heated in water bath until acetone evaporated
* Washed several times with ether
* Made alkaline with ammonia PH 8-9
* extracted 3 times with DCM
Then you would obviously again salt it out. As maleate shall be the most stable, as I got from some discussions on the hive, but not sure if this is really more stable than as fumarat (btw maleic acid is the cis-isomer of fumaric acid).
And again, this is just an alkaloid extraction, yielding all alkaloids.
LysergicMissioner wrote:Is LSH even a necessity in the conversion process?
What conversion process?
The famous "LSA->LSH" conversion by essential oils?
I'm very suspicious, that this is what is taking place. Any chemists I asked so far about it, said that this conversion would not take place as easily like that. Also all similar conversions I found so far in the literature needed way more sophisticated methods to make it happen (e.g. like special catalyzers).
Something is definitely changing, but unless someone does a proper analysis, we will never know what exactly.
I claim not that this is the truth. As this is just what got manifested into my mind at the current position in time on this physical plane. So please feel not offended by anything I say.