英文别名Pyrroloquinoline quinone Impurity 1; 4,5-Dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic Acid 2-Ethyl 7,9-DiMethyl Ester; 1H-Pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid, 4,5-dihydro-4,5-dioxo-, 2-ethyl 7,9-dimethyl ester; 2-Ethyl 7,9-dimethyl 4,5-dioxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate 
