Assembling the Puzzle of Taxifolin Polymorphism.

A large amount of the current literature dedicated to solid states of active pharmaceutical ingredients (APIs) pays special attention to polymorphism of flavonoids. Taxifolin (also known as dihydroquercetin) is an example of a typical flavonoid. Some new forms of taxifolin have been reported previously, however it is still unclear whether they represent polymorphic modifications.

Taxifolin tubes: crystal engineering and characteristics.

Taxifolin, also known as dihydroquercetin, is the major flavonoid in larch wood. It is well known as an antioxidant and a bioactive substance. Taxifolin as an active pharmaceutical ingredient is produced industrially in crystalline form during the processing of larch wood.