[Product name]: Quercetin
[Plant Source]: Dried bud of Sophora Flavescens Ait.
[CAS#]: 117-39-5
[Molecular Formula]:C15H10O7
[Assay]: 98% (by HPLC); 99% (by UV)
[Test Method]: HPLC or UV
[Characteristic]: yellow powder
[Shelf life]: 24 Months