Garcinone C, a xanthone derivative, is a natural compound extracted from Garcinia oblongifolia that is used as an anti-inflammatory, astringency and granulation-promoting medicine, and has potential cytotoxic effects on certain cancers. Garcinone C stimulates the expression levels of ATR and 4E-BP1 , while efficiently inhibiting the expression levels of cyclin B1, cyclin D1, cyclin E2, cdc2, Stat3 and CDK7 . Garcinone C significantly inhibits cell viability of the human Nasopharyngeal carcinoma (NPC) cell lines CNE1, CNE2, HK1 and HONE1 in a time‑ and dose‑dependent manner Form:Solid IC50& Target:ATR Stat-3 CDK7