2101811-41-8

(E)-4-(2-(2,5-Dioxopyrrolidin-1-yl)ethoxy)-4-oxobut-2-enoic Acid is a useful intermediate in the preparation of monomethyl fumarate (F500390) and its derivatives. Monomethyl fumarate is one of the most bioactive anti-psoriatic fumaric acid ester metabolite.