Figure 2
From: Coenzyme Q10 in the eye isomerizes by sunlight irradiation
Structural analysis of ion at m/z 880.72. (A) The structure of natural CoQ10 (all-trans form) with known and possible fragment ions (a–j). (B) MS/MS spectra of nonirradiated pure CoQ10. (C) MS/MS spectra of the molecular ion at m/z 880.72 (tentatively assigned as [CoQ10 + NH4]+) were observed in nonirradiated eyeball lipid extract data. The fragments of CoQ10 shown in (A) were marked in the MS/MS spectra.
