Succinic acid is synthesized as an intermediate of the TCA cycle , operating under aerobic conditions, from α-ketoglutaric acid by α-ketoglutarate dehydrogenase. ... Succinic acid is produced as an end product by the reductive TCA cycle , under anaerobic conditions.
succinic acid is the catalytic hydrogenation of maleic acid or its anhydride, although other methods are being used and investigated. Succinic acid has uses in certain drug compounds, in agricultural and food production, and in manufacturing.