2,2-Dimethyl-6-phenylpyrano[3,4-b]pyran-8-one is a natural product from the metabolites of Hypericum revolutum ssp.

1153624-36-2

C16H14O3

254.28

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years