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Mephedrone is a designer drug of the phenethylamine class with putative stimulant and entactogen-like properties. 4-Methylmethamphetamine (4-MMA) is a metabolite of mephedrone that lacks the β-keto moiety. This product is intended for forensic and research applications.

4-Methylmethamphetamine (Hydrochloride) is used as an internal analytical standard for analytical measurements. It is a metabolite of mephedrone that lackd the beta-keto moiety. It is used for forensic and research purposes.

[1] MARKUS R. MEYER. Beta-keto amphetamines: studies on the metabolism of the designer drug mephedrone and toxicological detection of mephedrone, butylone, and methylone in urine using gas chromatography–mass spectrometry[J]. Analytical and Bioanalytical Chemistry, 2010, 397 3: 1225-1233. DOI: 10.1007/s00216-010-3636-5