Exact Mass: 264.0558

Exact Mass Matches: 264.0558

Found 9 metabolites which its exact mass value is equals to given mass value 264.0558, within given mass tolerance error 0.0002 dalton. Try search metabolite list with more accurate mass tolerance error 4.0E-5 dalton.

2',2'-Difluorodeoxyuridine

1-[(2S,4R,5S)-3,3-difluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-hydroxy-1,2-dihydropyrimidin-2-one

C9H10F2N2O5 (264.0558)

2,2-Difluorodeoxyuridine is a metabolite of gemcitabine. Gemcitabine is a nucleoside analog used as chemotherapy. It is marketed as Gemzar by Eli Lilly and Company. (Wikipedia)

1-[(4R,5R)-3,3-Difluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

1-[3,3-difluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2,3,4-tetrahydropyrimidine-2,4-dione

C9H10F2N2O5 (264.0558)

Difluorodeoxyuridine

5,6-difluoro-1-[4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2,3,4-tetrahydropyrimidine-2,4-dione

C9H10F2N2O5 (264.0558)

1-[(2R,4S,5S)-5-[Difluoro(hydroxy)methyl]-4-hydroxyoxolan-2-yl]pyrimidine-2,4-dione

1-{5-[difluoro(hydroxy)methyl]-4-hydroxyoxolan-2-yl}-1,2,3,4-tetrahydropyrimidine-2,4-dione

C9H10F2N2O5 (264.0558)

2,2-Difluorodeoxyuridine

2,2-Difluoro-2-deoxyuridine

C9H10F2N2O5 (264.0558)

CONFIDENCE standard compound; EAWAG_UCHEM_ID 2649 2′,2′-Difluorodeoxyuridine (dFdU) is the main metabolite of Gemcitabine (HY-17026). 2′,2′-Difluorodeoxyuridine causes a concentration- and schedule- dependent radiosensitising effect in vitro[1].