1-Vinyl-3-carboxy-4-oxo-pyrazol(5,4-f)chinolin [German] 1-Vinyl-3-carboxy-4-oxo-pyrazolo(5,4-f)quinoline 1H-Pyrazolo(3,4-f)quinoline-8-carboxylic acid, 6,9-dihydro-6-ethenyl-9-oxo- 6,9-Dihydro-6-ethenyl-9-oxo-1H-pyrazolo(3,4-f)quinoline-8-carboxylic acid 69847-87-6 Acide dihydro-6,9 oxo-9 vinyl-6 pyrazolo(5,4-f)quinoleine carboxylique-8 [French] BRN 0811410