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- W1990883750 abstract "A fast and sensitive ultra-performance liquid chromatography-tandem mass spectrometric (UPLC/MS/MS) method was developed and validated for determination of the residual levels of Kryptofix 2.2.2 (K222) in [18F]-labeled radiopharmaceuticals. The analytical time was only 3 min, and the injection volume was 5 μL. An electrospray ionization source was used in the positive mode (ESI+) for UPLC/MS/MS. The analytical measurements were performed in the multiple reaction monitoring (MRM) mode. The calibration curve at the spiked concentrations of 2–500 ng/mL for K222 showed good linearity. The intra- and inter-day precisions were not more than 5%. The accuracy satisfied the requirement of quality control analysis, the recoveries were found to be 80–120%. This method was successfully applied to detect the residue of K222 in [18F]-fluorodeoxyglucose [(18F)FDG], [18F]-fluoromisonizole[(18F)FMISO], 3′-deoxy-3′-[18F]-fluorothymidine [(18F)FLT], and two new [18F]-labeled radiopharmaceuticals 4-[-(2-[18F]fluoroethoxy) methyl]-1-[2-(2-methyl-5-nitro-1H- imidazol-1-yl) ethyl]-1H-1,2,3-triazole (named as 18F-BNU-1) and 4-[-(2-[18F] fluoroethoxy) methyl]-1-[2-(2-nitro-1H-imidazol-1-yl) ethyl]-1H-1,2,3-triazole (named as 18F-BNU-2) produced in our lab." @default.
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- W1990883750 date "2011-05-01" @default.
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- W1990883750 title "Rapid Detection of the Residual Kryptofix 2.2.2 Levels in [18F]-Labeled Radiopharmaceuticals by Ultra-Performance Liquid Chromatography Tandem Mass Spectrometry" @default.
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- W1990883750 doi "https://doi.org/10.1080/00032719.2010.512679" @default.
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