ketol

1. (organic chemistry) A hydroxyketone (e.g., an acyloin).Examples: "1962, James A. Moore, Erich Heftmann, Chapter 2: Chemistry of the adrenocortical steroids, Helen Wendler Deane, The Adrenocortical Hormones, Part 1, Springer-Verlag, page 221, The 21-hydroxyl group in the α-ketol side chain is very easily esterified, and in many of the synthetic routes leading to these side chains the ketol acetate is still formed."; "Consider the enolization (Scheme 3.26) of the methyl ester of acetoacetic acid, a reaction involving ketol-enol tautomerism."; "The steroid acetates are stable derivatives, having the desirable property that the electron-capture detector (ECD) selectively responds to acetyl derivatives of α-ketols [958]."