>If someone was given a large amount of pseudoephedrine powder, is there a way to know if it is the d-pseudo...
>instead of the l-pseudo or a mix of d&l?
If you just want to know the isomer, Swim uses two Polarized lenses to view the pseudo-HCL salt disolved in just enough ethanol.
>(You do want the dextro, not the levo, for the d-meth, right?)
no, the l-pseudo yeilds d-meth.
Apart from TFSE there is also www.rhodium.ws
I guarantee you my friend you'll be able to find all your answers in these two.
https://www.thevespiary.org/rhodium/Rhodium/chemistry/meth.hi-rp.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/meth.hi-rp.html)
"The diastereoisomers, (-)-ephedrine and (+)-pseudoephedrine, are reduced to (+)-methamphetamine, whereas the enantiomers reduce to (-)-methamphetamine. The (±) mixture of either ephedrine reduces to racemic methamphetamine. The enantiomer and diastereoisomer of ephedrine selected as the precursor dictates what isomer of methamphetamine will be produced."