Structural Formula:

Molecular Formula: C₁₆H₂₄O₅

Molecular Weight: 284.35

The product is (3R,5aS,6R,8aS,9R,12S,12aR)-octahydrogen -3,6,9-trimethyl -3,12-epoxy -12H-pyrane [4,3-j]-1,2-coumaron -10 ( 3H ) alcohol .

Properties: The product is white needlelike crystal, odorless and tasted bitter.

The product is freely soluble in chloroform, soluble in acetone and slightly soluble in carbinol and ethanol, insoluble in water.

Melting Point: The product 's melting point is 145-150. It will dissolve at the time of fusing.