ursolic acid

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CAS: 77-52-1, Ursolic acid, ursolic acid, 3-Hydroxy-12-ursen-28-oic acid,

Ursolic acid free and sugar form or the form of glycosides into scattered around 7 Section 46 is 62 kinds of plants. Mainly plant privet Oleaceae ( Ligustrum lucidum Ait.) Leaves, rhododendron plant bears fruit Pharmaceutical Actostaphylos uva-ursi ( L.) Spreng, Rosaceae plant loquat Eriobotrya japonica ( Thunb.) Lindl.' s Leaves,

High content of ursolic acid for the prism-like luster ( ethanol) or fine needle-like crystal ( dilute ethanol) , low content of ursolic acid as a brown-yellow or yellow-green powder, has a special smell, is present in natural plant A pentacyclic triterpenes. , mp283 ~ 288 ? ? . Soluble in acetone, pyridine, glacial acetic acid can be dissolved in hot ethanol and 2% sodium hydroxide solution, insoluble in water and petroleum ether.

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