Definition of diazomethane in English:


Line breaks: diazo|methane
Pronunciation: /dʌɪˌazəʊˈmiːθeɪn
, -ˌeɪzəʊ-/


[mass noun] Chemistry
  • A poisonous, reactive yellow gas used as a methylating agent in chemical synthesis.
    • Chemical formula: CH2N2
    More example sentences
    • Samples were evaporated to dryness under vacuum, redissolved in 20 mm of methanol, then diazomethane added to methylate ABA.
    • The sap samples were thawed and an internal standard of [H 6] ABA was added before they were dried, methylated with ethereal diazomethane, dried and redissolved in methanol for analysis by gc/ms.
    • Lipids were extracted according to the method of Bligh and Dyer, followed by methylation with ethereal diazomethane.


late 19th century: from diazo- (indicating the presence of two nitrogen atoms) + methane.

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