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  • P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

LC-MS/MS를 이용한 혈청 중 dutasteride 분석

Analysis of dutasteride in human serum by LC-MS/MS

분석과학 / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2012, v.25 no.1, pp.76-82
https://doi.org/10.5806/AST.2012.25.1.076
남혜선 (식약청)
남경희 (식약청)
이장우 (식약청)
강진영 (식약청)
홍순근 (식약청)
김태성 (식약청)
정기경 (식약청)
강태석 (식약청)
윤혜정 (식약청)
이광호 (식약청)
이규식 (식약청)
정수희 (식약청)
  • 다운로드 수
  • 조회수

초록

본 연구는 혈청 중 두타스테라이드의 확인과 정량을 위하여 LC-ESI-MS/MS를 이용한 신뢰성 있는 분석법을 개발하고, 분석방법의 타당도를 검증하고자 수행하였다. 내부표준물질인 베클로메타손을 첨가한 혈청을 methyl tert-butyl ether (MTBE)를 사용하여 액체상추출법(liquid-liquid extraction, LLE)으로 추출하였다. LC-MS/MS의 양이온 모드에서 MRM(multiple reaction monitoring)방법으로 확인한 두타스테라이드와 베클로메타손의 mass transition은 각각 m/z 529.6→461.5, m/z 409.3→391.2 이었으며, 머무름 시간은 각각 6.45분, 5.46분이었다. 검량선은 0.5~30.0 ng/mL의 농도 범위에서 R2=0.9999의 높은 직선성을 나타내었으며, 정량한계와 회수율은 각각 0.5 ng/mL와 66~72% 이었다. 일내에 대한 정밀도는 3.5~5.5%, 정확도는 85.7~89.9% 범위이었으며, 연속 3일간 수행한 일간 정밀도는 4.2~5.8%, 정확도는 90.8~95.8% 이었다.

keywords
Dutasteride, LC-MS/MS, human serum

Abstract

The determination and confirmation of dutasteride in human serum was performed by a liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI/MS/MS). Beclomethasone as an internal standard (I.S.) was added to the serum and the mixed sample was pretreated by liquid-liquid extraction (LLE) with methyl tert-butyl ether (MTBE). The mass transitions of dutasteride and I.S. monitored in multiple reaction monitoring (MRM) were m/z 529.6→461.5 and m/z 409.3→391.2, respectively, and the retention times were 6.45 and 5.46min, respectively. The calibration curve was linear in the concentration range of 0.5~30.0 ng/mL (R2= 0.9999) and the limit of quantitation (LOQ) was found to be 0.5 ng/mL. The recovery of dutasteride was shown to be 66~72%. The intra-day assay precision and accuracy were in the range 3.5~5.5% and 85.7~89.9%, respectively, and the interday assay precision and accuracy were in the range 4.2~5.8% and 90.8~95.8%, respectively

keywords
Dutasteride, LC-MS/MS, human serum


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