a nonnarcotic substance, C 30 H 53 NO 11 , used as a cough suppressant.


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    a clear, colorless, viscous, poisonous liquid, C 7 H 5 N, used chiefly as an intermediate in organic synthesis.

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    a crystalline, water-insoluble ketone, C 13 H 10 O, used in organic synthesis. noun a white sweet-smelling crystalline solid used mainly in the manufacture of organic compounds and in perfume. Formula: C6H5COC6H5 Also called diphenylketone benzophenone (běn’zō-fĭ-nōn’, -fē’nōn) A white crystalline compound used in perfumes to prevent evaporation and in the manufacture of insecticides. Benzophenone […]

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    a yellow, crystalline aromatic carcinogenic hydrocarbon, C 20 H 12 , consisting of five fused benzene rings, produced by incomplete combustion of organic material, as coal, petroleum, or tobacco.

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