(E)-2-cyano-N,N-diethyl-3-(4-hydroxy-3-methoxy-5-nitrophenyl)acrylamide;(2E)-2-Cyano-N,N-diethyl-3-(4-hydroxy-3-methoxy-5-nitrophenyl)-2-propenamide; Entacapone 3-Methyl Ether;(E)-3-O-Methyl Entacapone; Entacapone Methoxy Impurity
(E)-2-cyano-N,N-diethyl-3-(4-hydroxy-3-methoxy-5-nitrophenyl)acrylamide;(2E)-2-Cyano-N,N-diethyl-3-(4-hydroxy-3-methoxy-5-nitrophenyl)-2-propenamide; Entacapone 3-Methyl Ether;(E)-3-O-Methyl Entacapone; Entacapone Methoxy Impurity