(+)-Catechin monohydrate is an antioxidant flavonoid that is a free radical scavenger. Research shows that it is relatively nontoxic to cells at high doses. (+)-Catechin can stop ultraviolet B induced human keratinocyte death throμgh the inhibition of JNK phosphorylation. Literature indicates that it may have Ca2+ antagonistic activity. (+)-Catechin monohydrate is an inhibitor of Cox-1.黄酮类抗氧剂，来自植物，自由基清道夫，阻止游离自由基对各种生物系统引起的伤害。 (+)-Catechin monohydrate is an antioxidant flavonoid that is a free radical scavenger. Research shows that it is relatively nontoxic to cells at high doses. (+)-Catechin can stop ultraviolet B induced human keratinocyte death through the inhibition of JNK phosphorylation. Literature indicates that it may have Ca2+ antagonistic activity. (+)-Catechin monohydrate is an inhibitor of Cox-1. An antioxidant flavonoid that is a free radical scavenger