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Hi，What concentration of acetonitrile should I use?

Which L-tartaric acid (d-tartaric acid, d-tartaric acid) is used? Or use D? Or both?

That is, the entire reaction process is sealed?

(R)-(+)-α-methylbenzylamine CAS number: 3886-69-9 Is it from the lungs? Or is it absorbed by the stomach? Can it be used directly? (R)-(+)-α-methylbenzylamine CAS number: 3886-69-9 Is it from the lungs? Or is it absorbed by the stomach? Can it be used directly?

Is yours the one pot method? What reaction equipment is used?

Can this method be replaced with ephedrine?

Can methamphetamine free base in the form of oil be directly changed to dextrorotation?

How do hydroiodic acid and ephedrine react to form methamphetamine?

Should I use d-tartaric acid directly? Can I get D by cleaning the oil produced by btcboss2022 method?

Could you please tell me the steps of hydroiodic acid in ephedrine?

Clean and smelly Methamphetamine freebase obtained：：how to become crystal

If you are Chinese, this is safe and easy to obtain. Ephedra is similar to other plants. Some people in China regard weeds as ephedra. Besides, only one type of ephedra in China is valuable for planting. Other varieties either have low levels or are protected.

Thank you, this is very useful to me. Can you help me make another detailed process for hydroiodic acid and ephedrine? I want to start simple.

Thank you, this is very useful to me. Can you help me make another detailed process for hydroiodic acid and ephedrine? I want to start simple.

CH3NH3Cl？？