ethynyl, n. Chem.
(iːˈθaɪnaɪl, ˈɛθɪnɪl)
Also -inyl.
[f. *ethyne n. + -yl.]
The radical CH{b3}C· derived from ethyne. Usu. attrib.: see also ethinylœstradiol n.
| 1933 Chem. Abstr. XXVII. 7273/1 Ethinyl group, auxochromic effect on C6H6 . 1934 Webster, Ethynyl. 1951 A. Grollman Pharmacol. & Therapeutics xxvi. 579 Estradiol is also marketed in the form of its benzoic acid ester in which form its activity is greatly enhanced. Its ethinyl derivative is also more active orally than is the parent substance. 1975 Physics Bull. Feb. 53/1 Space chemistry continues to grow apace with the discovery of increasing numbers of small molecules in interstellar space. The most recent is the ethynyl radical, C2H , found by [etc.]. 1982 Sci. Amer. Feb. 95/1 The last of them are typically molecules such as acetylene ( C2H2 ) and fragments such as the ethynyl radical ( C2H ). |