03-17-03 06:39
No 417902
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?
(Chief Bee)
03-18-03 00:59
No 418201
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.