2017
DOI: 10.1016/j.jpba.2017.09.005
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Development and implementation of a pass/fail field-friendly method for detecting sildenafil in suspect pharmaceutical tablets using a handheld Raman spectrometer and silver colloids

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Cited by 24 publications
(30 citation statements)
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“…After applying a sample preparation method, special agents in a mail facility tested 14 samples of Viagra (12 contained sildenafil) with the TruScan RM with an accuracy of 91.7% to qualitatively identify the presence/absence of sildenafil (Fourier Transform-Infrared (FT-IR) analysis as reference technique). 19 Different strengths (simulating ‘substandard’ medicines) of the same antimalarial APIs and brand could not be reliably distinguished using the match/not-match approach. 15 20 In addition, one in three placebos wrongly passed the identification test versus their full API strength counterpart.…”
Section: Resultsmentioning
confidence: 99%
“…After applying a sample preparation method, special agents in a mail facility tested 14 samples of Viagra (12 contained sildenafil) with the TruScan RM with an accuracy of 91.7% to qualitatively identify the presence/absence of sildenafil (Fourier Transform-Infrared (FT-IR) analysis as reference technique). 19 Different strengths (simulating ‘substandard’ medicines) of the same antimalarial APIs and brand could not be reliably distinguished using the match/not-match approach. 15 20 In addition, one in three placebos wrongly passed the identification test versus their full API strength counterpart.…”
Section: Resultsmentioning
confidence: 99%
“…The application of SERS to illicit drug detection began at the turn of the century and included cocaine [16], barbiturates [17], and amphetamines [18,19,20]. More recently, several publications have described the use of hand-held Raman spectrometers for field measurements [21,22,23,24].…”
Section: Introductionmentioning
confidence: 99%
“…Currently, IR spectrometers are very widely used, created and available databases of IR spectra for technical and food additives, drugs, poly-and monomers, surfactants, plasticizers, pesticides, solvents, petroleum products, toxic substances, steroids and other compounds, in the composition which includes one component. The literature is increasingly devoted to the publication of IR spectroscopy for the detection of FD, for example, samples of drugs of the steroid group [11], to identify derivatives of 1,4-benzodiazepines [12], qualitative and quantitative analysis of antitumor drugs derived from bis-β-chloroethylamine [13], drugs based on benzenesulfamide derivatives in the presence of degradation products [14], nicotinic acid and its derivatives [15], pyrazole and salicylic acid derivatives [16], sildenafil [17], oxcarbazepine [18]. In the presence of an azido group having a characteristic band in the range of 4.69-4.71 μm, it is possible to identify azidothymidine [19], by a set of absorption bands in the high-, medium-and lowfrequency (less than 7.69 μm) regionssynthetic peptide compounds: thymogen, thymodepressin, neogene [20].…”
Section: Research Resultsmentioning
confidence: 99%