Linked from
The 8 pages that link to Coenzyme, each with the reason it gives.
VitaminRelated: Several B vitamins become coenzymes that carry groups or electrons in metabolism.
RiboflavinNarrower topic: FMN and FAD are coenzymes made from riboflavin.
BiotinRelated: Biotin acts as a tightly bound coenzyme that carries activated carbon dioxide.
B vitaminsNarrower topic: Many B vitamins become coenzymes or supply the chemical groups they carry.