Differentiating MDMA, MDPH and other positional isomers

[Phobos]

As per the title, what kind of tests would differentiate between MDMA and his positional isomers?
Reagent kits? GC/MS? Other lab tests?
Would a positional isomer present as an impurity give a result different from pure MDMA when using a reagent kit (Marquis, Mecke, Mandelin, etc)?

 

[sekio]

NMR would be the gold standard for structure identifcation, but only with supporting GC/LC data that shows the compound is pure and not a mixture.

Differentiating MDMA from MDPH would be easy enough because one is a primary amine and one is a secondary amine. Robadope/Simons or whatever reagent can test that.

 

[Limpet_Chicken]

Depends on what the OP means by MDPH. An alpha-phenyl substituent (IIRC that was tested as a possible parkinson's disease med candidate at one point, alpha-phenyl-MDMA) or methylenedioxyphentermine.

 

[Phobos]

Thanks for the answers, I did mean methylenedioxyphentermine with MDPH.

 

[sekio]

MDPH is probably unlikely to be sold as MDMA/MDA because MPDH is not produced from safrole the same way MDMA, MDA, MDEA etc are.