A phytoalexin found in the skin of red grapes and as a constituent in red wine. Displays anti-inflammatory, and anti-tumor properties. Acts as an antioxidant and specific inihibitor of cyclooxygenase-1 (COX-1). Resveratrol activates Sirtuin (SIRT1) gene, a gene that may be associated with cellular longevity and ability to slow down the aging process. Resveratrol was reported in one study to reduce MERS-CoV replication in vitro.