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

Medicinal ChemistryMedicineDrug DiscoveryCounterfeit CialisDrug PurityViagra FingerprintingAnalytical ChemistryPharmacotherapyForensic ChemistryPharmacologyAtr-ftir SpectroscopyChromatographyPharmaceutical Research