Synonyms:
2-oxo-2,3-dihydro-1h-indole-6-carbonitrile ; 6-cyanoindole-2-one ; ref dupl: 6-cyano-2-oxoindole ; 6-cyanooxindole ; 2-oxoindoline-6-carbonitrile ; 2-oxindole-6-carbonitrile ; 2,3-dihydro-2-oxo-1h-indole-6-carbonitrile, 6-cyano-2-oxindole ; 2-oxo-2,3,3a,7a-tetrahydro-1h-indole-6-carbonitrile ; 6-cyano-2-oxoindole