indazolone

English

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “indazole + -one?”)

Noun

indazolone (countable and uncountable, plural indazolones)

1. (chemistry) An unstable bicyclic heterocycle derived from indazole that has analgesic, sedative, and spasmolytic properties.
   • 1960, Pierre Glafkidès, Photographic Chemistry, volume 2, page 603:

     In the case of the indazolones the link with the p-phenylenediamine is via the middle NH group.

   • 1971, “Journal: Organic”, in Chemical Society, numbers 4-7, Great Britain, page 982:

     2,3,4,5-Tetraphenylcyclopentadienone (tetracyclone) was added to the dichloromethane as a trap for the indazolones […]