Labeled Isoferulic Acid 3-O-B-D-Glucuronide, the glucuronide conjugate of Isoferulic Acid. Isoferulic Acid 3-O-B-D-Glucuronide is one of the circulating metabolites in human plasma after coffee consumption.Form:White to Off-White SolidMelting Point:170-174°CSolubility:Methanol