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Impurity fingerprints for the identification of counterfeit medicines--a feasibility study.
Feasibility Studies Least-Squares Analysis Piperazines Principal Component Analysis Purines Sildenafil Citrate Spectrophotometry, Ultraviolet Sulfones Tablets Tadalafil Abstract: Most of the counterfeit ...
Comparison and combination of spectroscopic techniques for the detection of counterfeit medicines.
Sildenafil Citrate Spectroscopy, Fourier Transform Infrared Spectroscopy, Near-Infrared Spectrum Analysis, Raman Sulfones Tadalafil Abstract: During this study, Fourier transform infrared spectroscopy (FT- ...
Evaluation of the residual solvent content of counterfeit tablets and capsules.
Tadalafil Abstract: A group of counterfeit samples of Viagra and Cialis were screened for their residual solvent content and compared to the content of the genuine products. It was observed that all ...