Biochemistry General 5227fb8b Which of the following is not a co-factor for pyruvate dehydrogenase complex? A Thiamine pyrophosphate B FAD C NAD D Biotin High-Yield Explanation Co-factor for PDH complex are: Thiamine pyrophosphate (vit B1), FAD (vit B2), NAD (vit B3), coA (vit B5), Lipoic acid.