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Toole KE, Fu S, Shimmon RG, Kraymen N. 
“Color Tests for the Preliminary Identification of Methcathinone and Analogues of Methcathinone”. 
Microgram. 2012;9(1).
Abstract
The preliminary identification of methcathinone and analogues of methcathinone presents a new and growing challenge to law enforcement. Color tests remain an important tool for the preliminary testing of suspected illicit drug samples. In this study, the applicability of a range of color tests to the preliminary identification of methcathinone and analogues of methcathinone was explored. It was found that Marquis reagent is suitable for the preliminary identification of methylenedioxysubstituted analogues of methcathinone. Liebermannís reagent was identified as an appropriate test for the preliminary identification of cathinone, methcathinone and 4-methylmethcathinone. Both of these color tests give rise to intensely yellow colored products. Liebermannís reagent also produced yellow and orange products upon reaction with N,N-dimethylcathinone and 4-methoxymethcathinone respectively, although these products were less intensely colored. A testing sequence incorporating these tests was utilized on seized illicit drug samples and found to be suitable for use in routine casework.
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