Thanks ScienceGuy for the great attacks. I'm glad you feel better about attacking me. The BPAP was made in liquid form because that was the easiest way to ship it as far as I know for the supplier. I'm not a chemist major; but, I think you'd know better as to why BPAP was in DMSO than me. Personally, I don't like the taste of DMSO that much; but, I'm not one to complain. As for the 1g quantity of BPAP. I'm not going to get into a pissing contest with you. What I stated was correct. At the time the supplier could only send out so much BPAP at the given purity. I need not mention over again that 1g of BPAP is esentially useless after a month or so (Don't quote me on that, Sir) without the proper preservation techniques. Anyway, you have shown how GREAT you are. Initially, your role in the group buy was to handle the EU/UK shipping and lab analysis of the product; however, you had to act like a pompous jerk when you recieved an empty vial (reasons unknown) and totally threw out the window any possibility for testing the compound for everyone. I offered a sample to anyone, again, nobody took up on that opportunity. You want to blame me and the supplier for the quantity provided? Fine, I'm not God and neither is he. We did our best and made amends by sending extra BPAP to participants. I congratulate you on your crusade against me and the supplier. Bravo!…And yet YADAYADA has confirmed himself that THE SUPPLIER is readily able to provide a 1 GRAM QUANTITY of BPAP!The reason why nobody got 1g was because the yields were poor and making BPAP was much harder than anticipated.
Personally, my B.S. DETECTOR is going off!
Furthermore, it is abundantly clear that neither YADAYADA nor his SUPPLIER knows what they are doing… wherein THIS post should have been wholly unnecessary, as the SUPPLIER should already know the information and in fact should have done this:Guys I'm attaching a HNMR of DMSO BPAP. As you may guess the supplier is still trying to stabalize the BPAP into HCL or Citrate form.
Free chemistry lesson for your Chinese chemists:
Furan derivatives are highly susceptible to acidic hydrolysis, when some moisture gets to BPAP HCl you will get acidic environment on crystal/powder surface and this starts degradation by ring opening and this starts condensations which are apparent on 1H NMR. Aromatic protons between 6,5 and 8 ppm should give solid 2:2:1 integration, but instead it shows that there is some impurity hidden inside middle multiplet. But its normal that you don't get perfect integration for NH2+ which you see as doublet above 9 ppm.
There is no way they will get stable BPAP HCl. Even citric acid can be too strong.
Solution:
Tell them to try preparing carbonate salt, or better benzoate - first by azeotropic removal of water in toluene or 1,2-dichloroetane solution of BPAP base, when water stops collecting there should be added (still hot solution) 1,05 equivalent of benzoic acid in dry solvent, stirring for some time and slow cooling which should start crystallization.
Hope that helps.
Furthermore, I also stand corrected regards LIABILITY, in that having re-read through this thread it has become clear that it was not in fact the SUPPLIER who is to blame, but it is indeed YADAYADA, who made the decision to UNNECESSARILY go with adding the NEUROTOXIC DMSO to yield a LIQUID as opposed to POWDER product:The supplier indicated that crystilization of BPAP… can be done and most likely will be done; but, I opted for liquid
form.
Therefore, seemingly I was incorrect in previously defending YADAYADA, as he clearly is very much to blame after all.
Edited by yadayada, 22 January 2014 - 06:39 AM.