A Multivariate Analysis of the Infrared Spectra of Drugs of Abuse

    Volume 25, Issue 2 (April 1980)

    ISSN: 0022-1198


    Published Online: 1 April 1980

    Page Count: 10

    Posey, FT
    Director, Tri-State Laboratories, Inc., Youngstown, Ohio

    Peterson, PC
    Professor, Youngstown State University, Youngstown, Ohio

    Moss, WW
    Associate curator, Academy of Natural Sciences, Philadelphia, Pa.

    (Received 11 May 1979; accepted 19 October 1979)


    The infrared (IR) spectra of 15 drugs of abuse were analyzed for similarity by using techniques of numerical taxonomy. The study included six barbiturates (amobarbital, barbital, butabarbital, pentobarbital, phenobarbital, and secobarbital), four amphetamine-related compounds (amphetamine, ephedrine, methamphetamine, and phentermine), and five other drugs (cocaine, heroin, phencyclidine, phendimetrazine, and diazepam). Three character sets were based on increasing numbers (10, 24, and 36) of IR peaks. The cluster analysis, principal component analysis, and nonmetric multidimensional scaling elements of the program system NT-SYS were used to structure taxonomic distances between drugs. Best results were obtained from the 36-peak data set; ordination diagrams proved to be more visually informative than phenograms. Preliminary results from our analysis of this set of drugs indicate that an expanded multivariate approach to drug classification may be useful.

    Paper ID: JFS12127J

    DOI: 10.1520/JFS12127J

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    Title A Multivariate Analysis of the Infrared Spectra of Drugs of Abuse
    Symposium , 0000-00-00
    Committee E30