During the sulfur-fumigation process of Paeoniae Radix Alba, Paeoniflorin, which serves as a principal constituent, can be converted into Paeoniflorin sulfite.
Paeoniflorgenin is a deglucosylated metabolite of Paeoniflorin[1]. [1]. Hsiu SL, et, al. A deglucosylated metabolite of paeoniflorin of the root of Paeonia lactiflora and its pharmacokinetics in rats. Planta Med. 2003 Dec; 69(12): 1113-8.