Peonidin chloride 是一种 O-甲基化的花青素，作为一种主要的植物色素，赋予牡丹等花以紫红色的色调，因此得名，同时也赋予浆果和蔬菜以紫红色。Peonidin chloride 在体外对癌细胞具有化学预防和抗炎活性，阻断 JB6 P+ 小鼠表皮细胞 COX-2 的表达和转化。 Peonidin chloride is an O-methylated anthocyanidin that functions as a primary plant pigment, endowing purplish-red hues to flowers such as the peony, from which it takes its name, as well as berries and vegetables. Peonidin chloride exhibits chemopreventive, as well as anti-inflammatory activities on cancer cells in vitro, blocking COX-2 expression and transformation in JB6 P+ mouse epidermal cells.