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Determination of betamethasone in human plasma by liquid chromatography with tandem mass / 药学学报
Acta Pharmaceutica Sinica ; (12): 402-407, 2008.
Artigo em Chinês | WPRIM | ID: wpr-407337
ABSTRACT
A sensitive and selective liquid chromatography-tandem mass spectrometric (LC-MS/MS) method was developed and validated for the determination of betamethasone in human plasma. The analyte was isocratically eluted on a Venusil XBP C8 column (200 mm ×3.9 mm ID, 5 μm) with methanol-water with a triple quad LC-MS/MS using ESI with positive ionization. Ions monitored in the multiple reaction monitoring (MRM) mode were m/z 393.3→355.2 for betamethasone and m/z 361.3→343.2 for prednisolone (IS). Betamethasone was extracted from 0.5 mL human plasma with ethyl acetate. The validation study demonstrated excellent precision and accuracy across the calibration range of 0.5 - 80.0 injection in healthy Chinese volunteers.

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Idioma: Chinês Revista: Acta Pharmaceutica Sinica Ano de publicação: 2008 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Idioma: Chinês Revista: Acta Pharmaceutica Sinica Ano de publicação: 2008 Tipo de documento: Artigo