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Sourcing ephedrine is difficult. It has previously been the most counterfeit and problematic precursor to deal with. I knew of a few stories of 25 kg drums with the bottom portion adulterated with repercussions on all ends. Maybe it is a different situation today than in 2004-8 ? If you are...

Mexico city you will have to worry about cameras in some of the nicer areas but otherwise it would be the top choice. You have lots of greenery everywhere, parks and lots of walk able areas. Zapopan is very suburban almost all gated communities. It is a sort of suburban area of Guadalajara which...

Here is a tip: There is a way to obtain industrial cleaning products which will contain up to 80% GBL.The rest will be naphta and other non-polar solvents. GBL is a degreaser and it is hard to replace. To get GBL, you have to go through legal companies and ask for MSDS and all safety...

Use a 3-Way Stopcock (glass) and you can also equip your tubing with quick disconnects (Bel-Art makes good ones) in case of emergencies. The danger of suckback happens when you have stopped adding HCl to sulfuric acid yet it is still bubbling so you keep the exit tube in the liquid. If you pull...

For me, local contacts are the best for this but maybe not for you. I would buy from places that purchase and refurbish industrial process equipment. Many times they love cash deals because they purchased large lots at auctions from production facilities shutting down and not all the inventory...

Your 100ml bottle is from Sigma-Aldrich, one of the most expensive providers of chemicals in the world. They mainly deal with academic researchers who are spending someone else's money. Also, it comes with documentation and reputation which is what you are paying for. There is no reason that...

Do not fall in the trap of thinking that a cover will save you. So I figured it could be interesting to have a legal cover in the form of a non-profit organization such as an "amateur chemist association" whose purpose would be to synthesize legal compounds with amateurs interested in learning...

You have to keep the following variables in mind the volume or "space" where the Al can interact with the HgCl2 the surface area of the Al the time required for amalgamation the volume of the solvent used the solvent used So for the solvent, simply always (and I mean always) use Methanol...

There are sometimes some bricks that will start to develop yellowish swirls. It will look innocent enough and then bam! The entire brick will turn a purplish earth tone with a very bizarre texture. I saw this back in 2007. Guy was crying since he had 3 kilos that turned that way. He begged me to...

Around 2017, my market was littered with this purple stuff. It was MDMA but very impure. Some may know the frustration as you may have crystal clear product....but people talk about the purple stuff. One day I had a 100g or so fraction of undistilled MDP2P from performic. It was left over...

This is a classic post from late 90's. Credit should be given to the author. I would say it is worth a read and it definitely works although outdated. There are better and simpler ways to proceed certainly in some of his steps. If anything it is good reading to inspire ingenuity. It definitely...

Amphetamine salts are notoriously unstable and go bad pretty fast. Even pharmaceutical preparation using pure pharmaceutical ingredients can have this problem. Or is it possible that a lower quality oil or a bad manufacturing process can lower the purity that much?Its probably hard to say, but...

Catalytic hydrogenation will be overly complicated and not something you will learn off hand or easily. I do not see how it can be all that popular of a reaction with large labs Use NaBH4 reduction, no special equipment is needed. Most are buying things like CAS: 28578-16-7 and turning it...

Your best bet will be Al/Hg hands down. Netherlands should be full of readily available P2NP. You can use metal reactors however they will need to be epoxy coated or the acid will eat through the reactor after around 3-5 reactions (you do not want to be there when it happens). If you are looking...

It depends. Dealing with sludge, no way is it worth it. Even in legal industries, sludge is one of the most difficult things to deal with. In the original write up, he is only using 5ml of 25% NaOH solution. You need around 9-9.3 grams of NaOH to destroy each gram of Al. So around 54-55 grams of...

If you find the sweet spot you will achieve 90-91% yields. The original procedured called for a ridiculous 6 or 8 hours of reflux, I cannot remember. If you are seeing red liquid, you have gone too far. Try 45 mins at 63C, then put heat off but make sure it is still on the hotplate and wrap...

Wow I can only imagine the horror of synthesizing that compound. Just opening and pouring from the reagent grade bottle was a trip.

This reaction works well in water only. What is the purpose of the toluene? Once HCl is added, basify using 50% NaOH solution (contents will urn blueish). You do not need a baking soda wash if done that way. Flood the flask with water and steam distill the P2P. It will be clear/slightly yellow...