| 单词 | diethylamine |
| 释义 | > as lemmasdiˈethylaˌmine C1. Denoting two equivalents of the monad radical ethyl (C2H5), replacing two atoms of hydrogen in a compound, as diˈethylaˌmineNH(C2H5)2, diethyl carbinolCOH·H·(C2H5)2, diethylstilbœstrol (or diethylstilbestrol), C18H20O2, a synthetic compound having œstrogenic properties; = stilboestrol n. ΚΠ 1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) viii. 241 Diethylamine, in which 2 atoms of hydrogen are replaced by 2 of ethyle. 1866 H. E. Roscoe Lessons Elem. Chem. xxxii. 287 Acetal is isomeric with diethyl glycol. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxx. 307 A hydrocarbon..called diethyl or butyl hydride. 1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 218 Diethylamine behaves with cyanic acid like ammonia and ethylamine, giving rise to diethyl-urea, CH2(C2H5)2N2O. 1880 Boston Jrnl. Chem. Dec. 137/2 The monethyl and diethyl phosphines have been prepared. 1938 E. C. Dodds et al. in Nature 5 Feb. 248/2 In this way 4:4′-dihydroxy-αβ-diethylstilbene (diethylstilbœstrol) was obtained. 1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 272/2 Diethylstilbœstrol..confers the mating instinct on ovariectomised animals. 1944 Ann. Reg. 1943 359 Carcinoma of the prostate was successfully treated by oral administration of the synthetic œstrogen diethylstilbœstrol. 1969 Daily Tel. 18 Dec. 15/8 Heavy doses of the synthetic oestrogen diethylstilbestrol are being given to prevent pregnancy in rape victims. < as lemmas |
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