Dear friends, thanks to Endlessness
, we finally have some analytical LC/MS results of some of the samples in this thread
. I tend to be a little disappointed in the purity of most of the samples, but on the bright side, the results give some strong indications about what techniques to follow. Iโll list the results, will elaborate on the preparation of the samples and will try to give some conclusions as well. In general one could say: stick to the VDS-protocols, stir like crazy (or use something that will do this for you) and go slow during basificationโฆ
1)Harmine sample prepared following VDSโs-extraction protocol with 4 โManskesโ instead of five, followed by pH specific separation ending in fast rising slope of the precipitation-curve (so in fact following VDSโs experiment 2.3).
Result: 78% harmine, 4% DHH
Endlessness guesses the remaining percentages were moisture (indeed, I did not dry any of the samples by heating or applying dessicant and they were not sent absolutely airtight neither
), or remaining salts. He states that these are not alkaloids. I think salts are not probable either, because I used ammonia-washes to clean up the alkaloids. These should have washed away any remaining salts. So moisture might be suspect number one. Anyway, this means there is a DHH-contamination of less than 5% (4/82) in the isolated harmine. Not that bad. I also have to add that I used this separation method in a rather quick fashion. Possibly, by letting the solution stand for a while under constant stirring, an even better result might be attained by letting the solution reach equilibrium and provide more precise pH-measurement.
2)Harmine isolated by bicarbonate-separation following VDS-experiment 2.4 (post #160)
Result: 68% harmine, 6% DHH
This gives a DHH-contamination rate of 8%. As explained in a later post, the influence of carbonic acid wasnโt known then. This might have led to a larger contamination rate. Anyway, as we came to realize, CONSTANT STIRRING OF THE SOLUTION can prevent this problem by decomposing the carbonic acid.
3)Harmine from HAR-DHH to HAR-THH conversion (post #169): clean-up with Na2CO3 as base after additional Manske
Result: 63% harmine, 10% DHH
This gives a DHH-contamination rate of 14%, which is pretty bad. But, interestingly, I reread my post (page 9, post #169) to find out that here again, the presence of carbonic acid messed thing up. Another confirmation of THE IMPORTANCE OF CONSTANT STIRRING when working with (bi)carbonates! It is disappointing that this was the cleanest harmine I ever observed mAcroscopically. I still find it difficult to believe that something looking as pure as in picture 20 of post #169 would have such a high contamination rateโฆ.or is the slow basification process that really cleans up the alkaloids?
4)Harmine from HAR-DHH to HAR-THH conversion (post #169): clean-up with NH4OH as base
Result: 49% harmine, 9% DHH, 4% THH
Even worse than sample 3. Same crude contaminated harmine. It seems that the extra Manske of sample 3 removed the THH that was present in this sample.
5)DHH isolated by bicarbonate-separation following VDS-experiment 2.4 (post #160)
This sample was sent in the first batch and got lost. I did not have any left the second time.
6)DHH from #5 after removal of first-precipitating fraction
Result: harmine 8%, DHH 74%
So a harmine contamination of almost 8%. This is a bit better than the result of the corresponding harmine fraction in sample 2, but this sample was selectively purified by deliberately discarding the first small fraction to precipitate when rebasifying sample 5.
7)THH from last higher-yield DHH-conversion (post #177)
Result: 4% harmine, 5% DHH, 91% THH
Now this is interesting. The percentages all add up to 100! Another interesting thing is that this reaction was done with DHH from a pH-metric separation. I did not have any of this left to send for analysis, so indirectly we can gather some information about it. When comparing the 4% of harmine in this sample with the 4-5% of DHH in sample 1, one might conclude that pH-metric separation worked equally well in both directions. However, we can not be sure about this. Anyway, of the DHH present in the reagent, almost 95% seemed to have been converted to THH (assuming we precipitated all of it and the remaining DHH as well). The key elements in this reaction were CONSTANT STIRRING DURING REDUCTION AND SLOW BASIFICATION. As we will see from the following samples, this really makes a big difference in yield and purity. Also, in this route, only ammonia was used throughout all reactions, basifications and washings.
8 )THH Activated charcoal clean-up (post #159)
Result: 6% harmine, 20% DHH, 70% THH
Same DHH used as in sample 7. Only without regular stirring during reduction and basification
9)THH from HAR-DHH to HAR-THH conversion (post #169): Na2CO3 as precipitation base
Result: 10% harmine, 26% DHH, 28% THH
Wow, this is bad! A bad reduction as well as a bad yield as well as a large amount of contamination. And again, in this case the solution was not stirred during reduction. As well, the sodium carbonate and ammonia were dumped in after reduction. Here as well, no stirring was applied while working with bicarbonate.
10)THH from HAR-DHH to HAR-THH conversion (post #169): NH4OH as precipitation base
Result: 8% harmine, 35% DHH, 50% THH
This is interesting. For this sample, the exact half of the same filtrate as sample 9 was basified, this time with ammonia. This was dumped in as well. As we see, even after correction of the missing percentages, the relative concentrations of the alkaloids are notably different, while the total yields were more or less the same (44 vs 47% respectively). This might indicate that the nature of the base does play a role in the final precipitation step.
So in conclusion: the LC/MS results show that the samples contain a variable amount of non alkaloid-mass. Hopefully, this fraction would mainly consist of moisture. Anyway, pH-metric separation of harmine and DHH following experiment 2.3 (protocol 2.1), was shown to yield an acceptable 95% separation of DHH from harmine. Indirectly deduced, a comparable contamination of harmine in the DHH fraction was observed as well. Also, the zinc-acetic acid reduction of DHH to THH (experiment 2.5, protocol 3), was shown to be very efficient at 95% conversion. All reactions and separations using (bi)carbonate yielded poor results, presumably because of the presence of undecomposed carbonic acid.
FOR THIS REASON, AS WELL AS FOR REASONS CONCERNING CONVERSION YIELD AND PURITY, ALL REACTIONS MUST BE CARRIED OUT UNDER CONTINUOUS STIRRING. One can not go wrong by following VDSโs protocols, but to make it easier for some people to follow, it might be helpful to write a tek, where the experimental methods of VDS are combined with the practical knowledge gained through our collaborative research. Therefore, I invite all Nexians to add their wisdom to this thread in the following weeks. I will then compile this knowledge into a practical tek. Jees, I think you play(ed) a major role in this research and would not want to finish this work without your approval. Oh, did I say โfinishโ? True, there are still some loose threads that need more research, but I think we have enough material now to help our fellow psychonauts gain access to pure substances, namely harmine, DHH and THH. Specifically, only ammonia-only routes can at this moment be confirmed. It would be very helpful to perform reductions and separations using the (bi)carbonates under continuous stirring and having the reactants analysed as well. But that's for some other time...candidates
?