Impurities in Illicit Drug Preparations: Amphetamine and Methamphetamine

Area of Science:

• Forensic Chemistry
• Analytical Chemistry

Background:

• Illicit amphetamine and methamphetamine preparations contain numerous impurities.
• These impurities often stem from incomplete purification during clandestine synthesis.

Purpose of the Study:

• To review the chromatographic and mass spectral properties of identified impurities in illicit amphetamine and methamphetamine.
• To discuss synthesis routes and methods for isolating and preconcentrating impurities.
• To highlight the significance of impurity profiling for differentiating drug origins.

Main Methods:

• Review of existing literature on amphetamine and methamphetamine synthesis and impurity analysis.
• Analysis of chromatographic and mass spectral data of known impurities.
• Discussion of isolation and preconcentration techniques for trace contaminants.

Main Results:

• Detailed survey of known impurities in illicit amphetamine and methamphetamine.
• Characterization of impurities using mass spectral and chromatographic properties.
• Emphasis on the Leuckart route as a common synthetic method for amphetamine.

Conclusions:

• Impurity profiling is crucial for forensic analysis of illicit drugs.
• "Route-specific" impurities can indicate the synthetic pathway used.
• Understanding impurity profiles aids in combating illicit drug manufacturing.