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Are you supposed to produce the pcc yourself. Besides aldrich, I can't really find commercial suppliers. Could potassium dichromate in dilute h2so4 replace it?

There are methods like oxidizing a specific methylephedrine, but afaik none which produces only homochiral compound.

There is no way to produce a given isomer on purpose. The difference that clients notice could be anything. From setting and mental state when using, to small differences in batches produced.

Advert. (n)

@leopard12 Nope. Should be visible (using clearnet version https://bbgate.com I thought posting a screenshot of what you should see, but well.... You wouldn't see it. Please try and see whether you can see one of them using direct url: https://bbgate.com/attachments/kx4yyoup0a-jpg.41187/

Reading this back.. have to add that crystals ARE more pure ofcourse. But effect-wise theres no diff in doing eg. 0.8g of crystals or 1.2g of powder. Although dirty taste might diminish it for some. But please do everyone a favor and just make crystals.

Thanks for your answer. Yep. Made both. But due to availability issues of 2b3m currently making 4mmc. However, its not coming even close to above product.

For future readers. The way to go is indeed KBr + H2SO4 and add H2O2 dropwise using a simple distillation setup. Used both 35% h2o2 and 13% h2o2 and both works just triple the amount. Or KBr + KMnO4 and add H2SO4 dropwise also using a simple distillation setup. The second yields more, but is...

Like they're gonna stop us 🤣

most is just being sold until the last day, discounts depending on the stock.

Lab result @HIGGS BOSSON

Probably switched vendor recently? Do the water washings to extremes. Everytime after washing and separating, check the water layer. Stir/shake vigourously. Repeat! Only stop when you would dare to drink the water layer (by clearness) No red or green ever since. Even on DCM, no heat, 75 minutes

I have other issues with this seller. Nonetheless to be completely honest, I have always received the packages.

Crystallization is a technique to purify the product. The effects are the same. However crystals are more attractive and this way is to be received (brain workings) more intense (less impure)

Yes

Diethylether

Tbh DCM should be 3L here. EthylAcetate you can use less

Sent for f+q

Brilliant. thanks

Rotovap apparatus;