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Validated UPLC-MS/MS method for the determination of tadalafil in human plasma and its application to a pharmacokinetic study
Translational and Clinical Pharmacology ; : 21-27, 2017.
Article in English | WPRIM | ID: wpr-196851
ABSTRACT
A simple, rapid, and reliable UPLC-MS/MS method was developed and validated for the determination of tadalafil in human plasma. The plasma samples were deproteinized with acetonitrile. Chromatographic separation was performed on a Shiseido C18 (100 × 2.1 mm, 2.7 µm) column with isocratic elution using 2.0 mM ammonium acetate and acetonitrile (5545, v/v) with 0.1% formic acid at a flow rate of 0.7 mL/min. The total run time was 1 min per sample. The quantitative analysis was performed using multiple reaction monitoring at transition of m/z 390.4 → 268.3 for tadalafil and m/z 475.3 → 283.3 for sildenafil as an internal standard. The method was fully validated over a concentration range of 5–1,000 ng/mL with a lower quantification limit of 5 ng/mL. Intra- and inter-day precision (relative standard deviation, %RSD) were within 8.4% and accuracy (relative error, %RE) was lower than -3.2%. The developed and validated method was successfully applied to a pharmacokinetic study of tadalafil (20 mg) in Korean healthy male subjects (n = 12).
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Plasma / Pharmacokinetics / Ammonium Compounds / Sildenafil Citrate / Tadalafil / Methods Limits: Humans / Male Language: English Journal: Translational and Clinical Pharmacology Year: 2017 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Plasma / Pharmacokinetics / Ammonium Compounds / Sildenafil Citrate / Tadalafil / Methods Limits: Humans / Male Language: English Journal: Translational and Clinical Pharmacology Year: 2017 Type: Article