• 33543-97-4
    7-methyl-4-oxo-4H-1-Benzopyran-2-carbonitrile
  • 161369-34-2
    8-nitro-4-oxo-4H-1-benzopyran-2-carboxamide
  • 141283-41-2
    8-nitro-4-oxochromene-2-carbonitrile

  • 参考文献

    Huang; Fu-Chich; Campbell; Henry F.; Learn; Keith S. Patent: US5082849 A1, 1992 ; US 5082849 A

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