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In page Coenzyme Q10:

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In 1958, its full chemical structure was reported by D. E. Wolf and colleagues working under Karl Folkers at Merck in Rahway.[4][1][3] Later that year D. E. Green and colleagues belonging to the Wisconsin research group suggested that ubiquinone should be called either mitoquinone or coenzyme Q due to its participation to the mitochondrial electron transport chain.[1][3]