File Name : figurecomplementarys1.jpg

Caption : figure s1. pca loadings for low doses of the different benzodiazepine ais provided by the same pharmaceutical company (normon): alprazolam, diazepam, lorazepam, bromazepam, and dipotassium clorazepate. a) pc-1; b) pc-2; c) pc-3. spectra range in the 150 to 1650 cm-1 region. raman conditions as in fig. 2.

File Name : figurecomplementarys2.jpg

Caption : figure s2. pca loadings (for pc-1) for the different pharmaceutical companies of: a) alprazolam, 1mg; b) diazepam, 5 mg; c) lorazepam, 1 mg; e) bromazepam, 1.5 mg; d) loadings (for pc-2) for lormetazepam, 1 mg. spectra range in the 150 to 1650 cm-1 region. raman conditions as in fig. 2.