Marquis reagent - Wikipedia
Marquis reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which …
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 …
Development and validation of a presumptive color spot test …
2016年8月1日 · Color testing is an ideal presumptive test and is commonly employed to provide rapid, selective, inexpensive and simple analyses. Synthetic cathinones are a class of …
Color Spot Test As a Presumptive Tool for the Rapid Detection of ...
In this study, we introduce a protocol for the presumptive identification of synthetic cathinones, employing three aqueous reagent solutions: copper (II) nitrate, 2,9-dimethyl-1,10 …
Identification of synthetic cathinones in seized materials: A review …
2022年2月13日 · By application of the test of Marquis or the test of Chen, methylenedioxy analogues of cathinones give positive results (Namera et al., 2015). The UNODC also …
Color Tests for the Preliminary Identification of Methcathinone and ...
2012年1月1日 · UNODC recommends the colorimetric method based on Zimmermann's reagent for synthetic cathinones, which targets all beta-amino ketones [29]. Moreover, Liebermann's …
One of the predominant structural groups of NPS are synthetic cathinones. These are β-keto phenethylamines, that have similarities to amphetamine, methamphetamine and MDMA in …
The characterization of some 3,4-methylenedioxycathinone …
1997年5月23日 · The Marquis' test is typically used to indicate the possible presence of amphetamine, methamphetamine, and/or dimethylamphetamine by reacting with them to form …
The Marquis test (sulfuric acid-formaldehyde reagent) is one of those classical tests which produce colours with a very large variety of organic chemicals, both natural and synthetic …
Comprehensive review of the detection methods for synthetic ...
2015年3月6日 · The combination of Marquis, Ehrlich, Simon, Lieberman–Burehand, and Mandelin reagents is useful for the detection of cathinones in samples. Like synthetic cannabinoids, the …