Corosolic acid physic Chemical Properties

It is amorphous white powder (methanol), also known as plant insulin, 2α-hydroxy ursolic acid, and Barabbas extract or Lagerstroemia speciosa extract. It belongs to α-amyrin type or alkyl-type pentacyclic triterpenoids, and is soluble in petroleum ether, benzene, chloroform, pyridine and some other organic solvents, but insoluble in water; it is also soluble in hot ethanol, methanol. Under anhydrous conditions, when it is reacted with a strong acid (sulfuric acid, phosphoric acid, perchloric acid), the acid (TCA) or Lewis’s acid (zinc chloride, aluminum chloride, antimony trichloride), there will be colorimetric reaction or fluorescence.

Corosolic acid physic Chemical Properties

Figure 1 the structural formula of corosolic acid

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