Counterfeit Cialis and Viagra fingerprinting by ATR-FTIR spectroscopy with chemometry: Can the same pharmaceutical powder mixture be used to falsify two medicines?

Strategies for characterizing sildenafil, vardenafil, tadalafil and their analogues in herbal dietary supplements, and detecting counterfeit products containing these drugs

Satya P. Singh, B. L. V. Prasad, Akash A. Savaliya et al. · TrAC Trends in Analytical Chemistry · 2008 · 167 citations

Pharmacy, Pharmacology, Pharmacotherapy +14

Simultaneous determination of synthetic phosphodiesterase-5 inhibitors found in a dietary supplement and pre-mixed bulk powders for dietary supplements using high-performance liquid chromatography with diode array detection and liquid chromatography–electrospray ionization tandem mass spectrometry

Peng Zou, Sharon Sze‐Yin Oh, Peiling Hou et al. · Journal of Chromatography A · 2005 · 148 citations

Natural Sciences, Pharmaceutical Analysis, Pharmacology +16

Comparison and combination of spectroscopic techniques for the detection of counterfeit medicines

Pierre‐Yves Sacré, Eric Deconinck, Thomas De Beer et al. · Journal of Pharmaceutical and Biomedical Analysis · 2010 · 138 citations · Full text

Pharmacy, Chemistry, Pharmaceutical Analysis +14

The application of chemometrics on Infrared and Raman spectra as a tool for the forensic analysis of paints

Cyril Muehlethaler, Geneviève Massonnet, Pierre Esseiva · Forensic Science International · 2011 · 124 citations

Natural Sciences, Chemistry, Analytical Chemistry +11

Structure elucidation of sildenafil analogues in herbal products

Leonore Blok‐Tip, Bert Zomer, Frank Bakker et al. · Food Additives & Contaminants · 2004 · 118 citations · Full text

Pharmacy, Medicinal Chemistry, Pharmacology +11