Medicarpin is a pterocarpan, a derivative of isoflavonoids.

Medicarpin is found in Medicago truncatula and Swartzia madagascariensis.

It can also be found in Maackia amurensis cell cultures.

[1] The root nodule formation by Sinorhizobium meliloti[2] is apparently dependent on the flavonoids pathway.

[3] Pterocarpin synthase has 3 substrates : medicarpin, NADP+ and H2O, and 3 products : vestitone, NADPH and H+.