1,2,3,7-Tetramethoxyxanthone is a natural product from Polygala tenuifolia Willd.

22804-52-0

C17H16O6

316.31

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