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Dehydroxylactone is a substance extracted from the root of the Asteraceae genus Asteraceae, which has smooth muscle relaxation and antispasmodic effects. The main components of woody fragrance contain volatile oil and inulin. The volatile oil contains dehydroxylactone and so on.

ChEBI: 3,6,9-Trimethylidene-3a,4,5,6a,7,8,9a,9b-octahydroazuleno[4,5-b]furan-2-one is a sesquiterpene lactone.

Solvent extraction method: adding 8 times the volume fraction of 60% ethanol and heating and refluxing for 2 extractions, each extraction for 1 hour. The yield of volatile oil in the soup was the highest after soaking and decocting Muxiang for about 20 min. The amount of extract decoction increased with the prolongation of decoction time.