TABLE 1

Comparison of the fragments in the daughter mass spectrum between the subject metabolite and TAS-108 and its known metabolites

The daughter mass spectra of TAS-108 and its known metabolites were obtained with a Finnigan TSQ 7000 detector (Thermo Electron Corporation) according to the description under Materials and Methods.




The Subjective Metabolite

The Subjective Metabolite [M + 4]

TAS-108

deEt-TAS-108

TAS-108-N-Oxide
Q1 491 (477 + 14) 495 (491 + 4) 509 477 528
F1 137 137 137 137 137
F2 161 (147 + 14) 161 147 147 147
F3 187 (173 + 14) 187 173 173 173
F4 311 (277 + 14) 315 (311 + 4) 277 277 277
F5
447 (433 + 14)
451 (447 + 4)
433
433
433