Irigenin is a naturally occuring O-methylated isoflavone.

Tectoridin, an isoflavone, is a natural product isolated and purified from the rhizomes of belamcanda chinensis (L.) DC. with anti-inflammatory activities.

Tectorigenin, a natural product isolated and purified from the rhizomes of Belamcanda chinensis (L.) DC., has antioxidant, anti-inflammatory by inhibiting the induction of COX-2 in the inflammatory cells activities and may be a possible therapeutic agent for leukemia.

Irisflorentin, a natural product isolated and purified from the rhizomes of Belamcanda chinensis (L.) DC., has anti-inflammatory mechanism in LPS-activated RAW 264.7 macrophages, by reducing the transcriptional and translational levels of inducible nitric oxide synthase (iNOS) as well as the production of NO.