Shinpterocarpin is a flavonoid that can be found in Glycyrrhiza glabra L.[1].
References
[1] Kitagawa I, et al. Chemical studies of Chinese licorice-roots. I. Elucidation of five new flavonoid constituents from the roots of Glycyrrhiza glabra L. collected in Xinjiang. Chem Pharm Bull (Tokyo). 1994 May;42(5):1056-62. DOI:10.1248/cpb.42.1056
