吗替麦考酚酯是非竞争性，选择性和可逆的肌苷一磷酸脱氢酶(IMPDH)抑制剂，IC50分别为39 nM 和27 nM。
(E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid
