Would separation of racemic methamphetamine with tartaric acid result in completely pure dex-methampetamine?

[finch3523]

I wanted to ask if actually somebody did the tartaric acid method for getting dexamphetamine and then determined how pure of dex-meth was aquired? E.g. an NMR test to see if and how much levo-methamphetamine would still be present? thx!

 

[William D.]

~75:25 in theory. But it may differ. The use of other separation agents may be more selective. As dibenzoyl tartaric acid.