Standards; Pharmaceutical/API Drug Impurities/Metabolites;
应用:
2,4-Dicyano-3-(3,4-dihydroxy-5-nitrophenyl)-N1,N1,N5,N5-tetraethylpentanediamide is a dimer impurity of Entacapone n (E558500), a peripherally acting inhibitor of catechol-O-methyl transferase (COMT), an enzyme involved in the metabolism of catecholamine neurotransmitters and related drugs.