<prompt> The Co-enzyme required for the synthesis of fatty acid synthesis is:FADFADH2NADNADPH  <response>: The Main Source of NADPH for Lipogenesis Is the Pentose Phosphate Pathway.The pentose phosphate pathway is an alternative route for the metabolism of glucose. It does not lead to formation of ATP but has two major functions:The formation of NADPH for synthesis of fatty acids and steroids, and maintaining reduced glutathione for anti- oxidant activity.The synthesis of ribose for nucleotide and nucleic acid formation.Ref:Harpers Illustrated Biochemistry 30th Edition 196 