Estriol 3-glucuronide

Estriol 3-glucuronide, or oestriol 3-glucuronide, also known as estriol 3-β--glucosiduronic acid, is a natural, steroidal estrogen and a glucuronic acid (β--glucopyranuronic acid) conjugate of estriol. It is found in the urine of women as a reversibly formed metabolite of estriol. The positional isomer of estriol 3-glucuronide, estriol 16α-glucuronide, also occurs as an endogenous metabolite of estriol, but to a much greater extent in comparison.