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Representative mass-ion chromatogram showing separation of UL10, UL9, UN9 and UN10. Structures of ubiquinone and ubiquinol, where n is the number of isoprene units in the side chain. UL10 and UN10 have 10 isoprene units, while UL9 and UN9 have 9 isoprene units; otherwise they are structurally identical.
UL10: ubiquinol-10; UN10: ubiquinone-10; CoQ9: coenzyme Q9; CoQ10: coenzyme Q10.
