Journal Published Online: 01 March 1992
Volume 37, Issue 2

Fourier Transform Infrared/Raman Differentiation and Characterization of - and -2,5-Dimethoxy-4,β-Dimethyl-β'-Nitrostyrenes: Precursors to the Street Drug STP

CODEN: JFSCAS

Abstract

Fourier transform Raman and infrared spectra of pure cis(Z)- and trans(E)- 2,5-dimethoxy-4,β-dimethyl-β-nitrostyrene (precursors of the psychotomimetic street drug STP or DOM) were recorded in the solid state. The spectra show characteristic features of the ethylene moiety and of the aryl and nitro substituents which permit ready differentiation and identification of these isomers. A very strong Raman line at 1670 cm−1 from the cis isomer for the C=C stretching mode, in comparison with a strong Raman line at 1641 cm−1 for the trans isomer, affords primary differentiation of these substances. A second characteristic, of both the Raman and infrared (IR) spectra, is that the frequency of the strong symmetric nitro (NO2) stretching band is about 40 cm−1 higher in the cis (1346 cm−1) than the trans isomer (1301 cm−1). All major IR and Raman bands are reported and given vibrational assignments.

Author Information

By, A
Bureau of Drug Research. Health Protection Branch, Health and Welfare Canada, Ottawa, Ontario, Canada
Neville, GA
Bureau of Drug Research. Health Protection Branch, Health and Welfare Canada, Ottawa, Ontario, Canada
Shurvell, HF
Queens's University, Kingston, Ontario, Canada
Pages: 10
Price: $25.00
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Stock #: JFS13258J
ISSN: 0022-1198
DOI: 10.1520/JFS13258J