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9-Oxo-9-oxime-fluorene-4-carboxylicacid

9-Oxo-9h-xanthene-1-carboxylicacidmethylester

9-Oxo-9h-thioxanthene-3-carboxylicacid

9-Oxo-9h-thioxanthene-2-carboxylicacid

9-Oxo-1,2,3,9-tetrahydro-pyrrolo[2,1-b]quinazoline-6-carboxylicacid

9-N-propylfluorene

9-N-octylcarbazole

9-Methyl-7(h)-benzo[c]carbazole