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单词 ketene
释义

Definition of ketene in English:

ketene

noun ˈkiːtiːnˈkitin
mass nounChemistry
  • 1A pungent colourless reactive gas, used as an intermediate in chemical synthesis.

    Chemical formula: CH₂CO

    Example sentencesExamples
    • It was reasoned that the free amino groups on lysine and hydroxylysine, known to be present in Type-I collagen, served as the primary nucleophilic sites for the ketene amide intermediate.
    • In addition, we showed that a novel, light-activated DAP derivative could, on photolysis, chemically cross-link tissue through the reactions of the ketene intermediate.
    • The structure of the collagen in the tissue may partially mask some of the available nucleophilic amine sites, whereas water may compete with the amines for the reactive ketene amide intermediate.
    1. 1.1count noun A substituted derivative of ketene.

Origin

Early 20th century: from ketone + -ene.

 
 

Definition of ketene in US English:

ketene

nounˈkētēnˈkitin
Chemistry
  • 1A pungent colorless reactive gas, used as an intermediate in chemical synthesis.

    Chemical formula: C₂H₂O

    Example sentencesExamples
    • In addition, we showed that a novel, light-activated DAP derivative could, on photolysis, chemically cross-link tissue through the reactions of the ketene intermediate.
    • It was reasoned that the free amino groups on lysine and hydroxylysine, known to be present in Type-I collagen, served as the primary nucleophilic sites for the ketene amide intermediate.
    • The structure of the collagen in the tissue may partially mask some of the available nucleophilic amine sites, whereas water may compete with the amines for the reactive ketene amide intermediate.
    1. 1.1 A substituted derivative of ketene.

Origin

Early 20th century: from ketone + -ene.

 
 
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更新时间:2025/1/11 7:33:26