Synonyms: BRN 0892638;1-Ethyl-3-carboxy-4-oxo-pyrazolo(5,4-f)quinoline;1-Aethyl-3-carboxy-4-oxo-pyrazol(5,4-f)chinolin [German];1H-Pyrazolo(3,4-f)quinoline-8-carboxylic acid, 6,9-dihydro-6-ethyl-9-oxo-;6,9-Dihydro-6-ethyl-9-oxo-1H-pyrazolo(3,4-f)quinoline-8-carboxylic acid;AC1MHELQ;LS-129323;1-Aethyl-3-carboxy-4-oxo-pyrazol(5,4-f)chinolin;6-ethyl-9-oxo-1H-pyrazolo[3,4-f]quinoline-8-carboxylic acid;65642-37-7