Riccionidin A chloride

2,?3,?6,?8-?Tetrahydroxybenzofuro[3,?2-?b]?[1]?benzopyran-?5-?ium Chloride can be used in the synthesis of Riccionidin A (CAS# 155518-34-6), which is a flavonoid, whose biosynthesis is regulated by R2R3-MYB transcription factors in Marchantia polymorpha.