Infrared identification of lysergide (LSD)
Journal of Pharmacy and Pharmacology November 1, 1969 R. J. Mesley, W H Evans 14 citations
Infrared spectra of LSD and its tartrate salts were studied, revealing distinct spectral patterns for amorphous and crystalline forms of LSD base, the neutral tartrate, and two forms of the hydrogen tartrate. The neutral tartrate was observed to convert to the hydrogen tartrate over time. While these spectra are distinctive and useful for identifying LSD and its salts, the use of potassium bromide discs for sample preparation was found to alter the spectra of the salts, affecting reproducibility.