Cassiatannin A

Cassiatannin A is a tetramer of proanthocyanidin (HY-N0794) found in Cinnamomum cassia. Cassiatannin A shows COX-2 inhibitor activity with inhibition rate of 38, 52 and 97% at 10, 100 and 1000 μg/mL. Cassiatannin A can be used for the research of inflammation[1].