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Hello wannause3311, If you're talking about Lisdexamphetamine (Vyvanse) and dextroamphetamine (Adderall) then it is possible to use washing/purification methods such as isopropyl alcohol (in high concentration) extraction mainly used for recrystallization and chromatography (as a verification). In this case, the purification would only separate impurities (pill binders) from methylphenidate which would slightly increase purity but apart from that there is nothing substantial you can extract from methylphenidate. It's like trying to extract pseudos from meth. Don't forget that methylphenidate is a derivative of meth and you can see that through the slight euphoria experience coupled with increase focus and organization. It is mostly used by Adhd people but can serve you well if you forgot to review for your exam tomorrow. Methylphenidate is a racemic mixture meaning that it contains enantiomers (mirror form of the same molecule), in Ritalin you get 3 enantiomers. Only thing you would remove from that is a chiral entity through probably chromatographic and electrophoteric strategies. Methylphenidate is already synthesized. I hope that can answer your question. -BlueScreen Market