A fast and sensitive UHPLC–MS/MS method for the determination ofN‐butylscopolamine in human plasma: application in a bioequivalence study

Abstract

We have developed and validated a fast and sensitive ultra high-performance liquid chromatography with positive ion electrospray ionization tandem mass spectrometry method for determining N-butylscopolamine levels in human plasma using propranolol as an internal standard. The acquisition was set up in the multiple reaction monitoring mode with the transitions m/z 360.3 → 138.0 for N-butylscopolamine and m/z 260.2 → 116.1 for IS. This method uses a liquid-liquid extraction process with dichloromethane. The analyte and IS were chromatographed on a C , 50 × 2.1 mm, 1.7 μm column through isocratic elution with acetonitrile-5 mm ammonium acetate (adjusted to pH 3.0 with formic acid). The method was linear in the 1-1000 pg/mL range for N-butylscopolamine and was selective, precise, accurate and robust. The validated method was successfully applied to perform a bioequivalence study of the reference (Buscopan , from Boehringer Ingelheim) and the test sample coated-tablet formulations (from Foundation for Popular Remedy), both containing 10 mg of N-butylscopolamine bromide administered as a single dose. Using 58 healthy volunteers and accounting for the high intra-individual variability confirmed by statistical calculations (38%), the two formulations were considered bioequivalent because the rate and extent of absorption (within 80-125% interval), satisfying international requirements.

Desenvolvimento de uma língua optoeletrônica utilizando dispositivos microfluídicos em papel para identificação de bebidas contaminadas com drogas de abuso

“…O composto brometo de N-butilescopolamina (BNBE), também conhecido como brometo de n-butil-hioscina, Figura 2, (TYTGAT, 2007;SUENAGA et al, 2017;GAMAL, 2020) A SCP também é usada como uma droga recreativa, geralmente devido aos seus efeitos alucinógenos, mas também por suas supostas propriedades afrodisíacas. Para produzir os efeitos alucinógenos, eles podem ser fumados e muitas informações podem ser encontradas em fóruns da Internet sobre como preparar uma infusão das plantas, seja das raízes, folhas, caules, flores ou frutas e sementes para esse fim.…”