Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Santonic acid is an organic compound containing both carboxylic acid and ketone functionality. It was synthesized by based-catalyzed hydrolysis of santonin followed by a multistep rearrangement process by R. B. Woodward.Unusually for a carboxylic acid, santonic acid does not form hydrogen-bonded dimers in the crystalline phase. Rather, it adopts a polymeric structure, with individual santonic acid molecules linked by intermolecular carboxyl-to-ketone hydrogen bonds.