Also available in 1 mL, 2 mg, 5 mg, 10 mg, 50 mg, 100 mg, 200 mg and bulk. Please contact Fisher for quotes. Diroximel fumarate (Diroximel Fumarete), a prodrug of monomethyl fumarate in a controlled-release formulation, rapidly and potently converts to MMF in the body. Purity 99.88%