A phenol with diverse biological activities; is a gut microbiota-derived active metabolite of ferulic acid; inhibits α-glucosidase, α-amylase, and tyrosinase (Kis = 47.7, 189, and 40.3 UG/ml, respectively); induces cell cycle arrest at the S and G2/M phases and apoptosis in HT-29 cells at 1 mM