Author Topic: Norephedrine extraction  (Read 492 times)

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comus

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Norephedrine extraction
« on: March 17, 2003, 06:39:00 AM »
I haven't had a Merk Index for over a week so I am here asking, what solvents are needed to separate norephedrine HCl from yohimbine HCl and caffeine?

Rhodium

  • Guest
I don't think a solvent extraction will be...
« Reply #1 on: March 18, 2003, 12:59:00 AM »
I don't think a solvent extraction will be enough for that, if the norephedrine is present to a much greater extent than the other ingredients, maybe repeated recrystallizations will help.