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17-ketosteroid
ketosteroid n. 
/ˌkiːtə(ʊ)ˈstɪərɔɪd/, /ˌkidoʊˈstɪˌrɔɪd/ any steroid whose molecules contain a ketone group; 17-ketosteroid (see quot. 1964).
Brit. /ˌkiːtə(ʊ)ˈstɛrɔɪd/
, /ˌkiːtə(ʊ)ˈstɛrɔɪd//ˌkiːtə(ʊ)ˈstɪərɔɪd/U.S. /ˌkidoʊˈstɛˌrɔɪd/
, /ˌkidoʊˈstɛˌrɔɪd//ˌkidoʊˈstɪˌrɔɪd/ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [noun] > cyclic compounds > steroids > ketosteroid
ketosteroid1939
oxosteroid1956
1939 Biochem. Jrnl. 33 931 (heading) The isolation of 17-ketosteroids from the urine of normal women.
1959 Austral. Jrnl. Exper. Biol. 37 147 It was decided to employ enzymatic hydrolysis and separation of the individual ketosteroids in an attempt to identify and estimate them individually.
1964 A. White et al. Princ. Biochem. (ed. 3) xlviii. 856 Since each of the various urinary metabolites of testosterone has a ketone group at C-17, these substances are referred to as 17-ketosteroids, and their concentration in the urine is a useful index of endogenous production of androgenic hormones.
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