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A GC-MS method was developed and validated for the detection and quantification of cathine, cathinone, methcathinone and ephedrine in oral fluid specimens. The analytes and internal standard (amphetamine-d5) were extracted from 0.5 mL oral fluids by ethyl acetate, and then the dried extracts were derivatized with heptafluorobutyric anhydride at T+ 0:20. 2 ml. oral. 1,4-Butanediol. (liquid) BODY WEIGHT: 185 lb. I understand that this forum is to discuss the effects as well as preparation of psychoactives. However, given the simplicity of methcathinone (cat from here on) synthesis, I will include my "recipe," as well as effects. Methcathinone, a methyl derivative of cathinone, is an illicit drug also known as ephedrone. It is a stimulant found in the "khat" plant, Catha edulis, which can easily be synthesized from pseudoephedrine. Its intoxication is difficult to diagnose and cure properly for two reasons: (i) target consumers are usually "well-educated people" aware of the risks and precautionary measures and (ii) intoxication by cathinone derivatives of synthetic or natural (derived from the khat Methcathinone is a psychostimulant drug derived in a lab by mixing compounds from the leaves of the khat plant and pseudoephedrine. It's used for recreational purposes and has no medicinal value. The drug looks like a white or off-white crystalline powder. Users take it by snorting it, mixing it in a drink, or by diluting it and injecting it. It works by producing elevated dopamine levels. A method that yields more methcathinone is oxidizing (pseudo)ephedrine with chromium (VI) compounds. Methcathinone as free base is very unstable; it easily loses its ketone group, which is substituted with a hydroxyl group, yielding pseudoephedrine, in the reverse of the typical synthesis reaction.