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Updated: Nov 23, 2025

Color Spot Test As a Presumptive Tool for the Rapid Detection of Synthetic Cathinones
Published on: February 5, 2018
Computational study of IR, Raman, and NMR spectra of 4-methylmethcathinone drug
Valentina Minaeva1, Boris Minaev1, Alexander Panchenko2
1Bohdan Khmelnytsky National University, Cherkasy, 18031, Ukraine.
Abstract:
Molecular electronic structure, IR, UV, and NMR spectra of the most popular cathinone, known as mephedrone or 4-methylmethcathinone (4-MMC), is studied thoroughly by quantum chemical calculation in terms of the density functional theory (DFT). Geometry optimization of 4-MMC and its hydrochloride complex is performed with the B3LYP functional, and all vibrational frequencies are analyzed in all details. On this background, the IR and Raman spectra are interpreted. The importance of low-frequency terahertz and Raman spectra is stressed for distinguishing of various MMC isomers. The UV spectrum is calculated by time-dependent DFT method which allows complete interpretation of intense absorption bands at 270 and 210 nm as combinations of various ππ*, nπ*, and charge transfer excitations in amino-phenyl moieties. Very informative analysis of UV absorption and NMR spectra provides useful details on the structure-activity relationship for mephedrone molecule.
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