Ethynyl

In organic chemistry, the term ethynyl designates

• An ethynyl group (HC≡C–), also designated as acetylenic group (from acetylene), and referred to in IUPAC chemical nomenclature as -yne suffix. Also sometimes designed as Ethinyl in compounds (Ethinyl estradiol). See main page Alkynes.
• The ethynyl radical (HC≡C·), the compound found in interstellar medium, and transiently on earth during chemical reactions.
• The ethynyl carbanion Acetylide (HC≡C⁻)

See also

• Propynyl ( CH3-C≡C-R, 1-propynyl group; or HC≡C−CH2-R, 2-propynyl group, Propargyl )