Rafael Barrientos Astigarraga

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In the present study a fast, sensitive and robust validated method to quantify chlorpheniramine in human plasma using brompheniramine as internal standard (IS) is described. The analyte and the IS(More)
OBJECTIVE To compare the bioavailability of two glimepiride 4-mg tablet formulation in 26 healthy volunteers of both sexes. MATERIAL AND METHODS The study was conducted open with randomized(More)
In the present study, a novel, fast, sensitive and robust method to quantify clozapine in human plasma using quetiapine as the internal standard (IS) is described. The analyte and the IS were(More)
In the present study, a novel, fast, sensitive and robust method to quantify ethinylestradiol in human plasma using 17alpha-ethinylestradiol-d4 as the internal standard (IS) is described. The analyte(More)
In the present study, a novel, fast, sensitive and robust method to quantify budesonide in human plasma using 3-keto-desogestrel as the internal standard (IS) is described. The analyte and the IS(More)
A specific, fast and sensitive high performance liquid chromatography (HPLC) coupled to atmospheric pressure photoionization (APPI) tandem mass spectrometric (LC-MS/MS) assay was developed for the(More)
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