5 fluoro 2' deoxyuridine 5' diphosphate 1 5 fluoro 2' deoxyuridine 5' triphosphate 1 5 fluorouridine 5' diphosphate 1 5 fluorouridine 5' diphosphate hexose 1 5 fluorouridine 5' diphosphate n acetylhexosamine 1 5 fluorouridine 5' monophosphate 1 5-Fluorouracil 1 Article 1 DNA 1 DNA extraction 1 Incorporation rate 1 LC-MS-HRMS 1 Nucleotide 1 RNA 1 carbon 1 cell metabolism 1 controlled study 1 drug determination 1 drug synthesis 1 enzyme inhibition 1 floxuridine 1 floxuridine phosphate 1 fluorouracil derivative 1 fluorouridine fluorouridine triphosphate 1 limit of detection 1 liquid chromatography-mass spectrometry 1 matrix effect 1 ribosome RNA 1 unclassified drug 1