1364322-41-7(2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-methylprop-2-enamideEntacapone impurity G [EP]UNII-31599TJ1372-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-methylprop-2-enamide, (2E)-31599TJ1372-Propenamide, 2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-methyl-, (2E)-DTXSID80159787ENTACAPONE IMPURITY G [EP IMPURITY]ENTACAPONE IMPURITY G (EP IMPURITY)