title: Berberonic acid
text: # Berberonic acid
  
  Berberonic acid (pyridine-2,4,5-tricarboxylic acid) is an organic compound that belongs to the heterocycles (more precisely the heteroaromatics). It belongs to the group of pyridinetricarboxylic acids and consists of a pyridine ring which carries three carboxy groups in the 2-, 4- and 5-positions. The name is derived from berberine.
  
  ## Preparation
  
  Berberonic acid is obtained in the oxidation of berberine with nitric acid. It can also be derived by oxidative degradation of monascaminone with potassium permanganate.
  
  