| piperazine estrone sulfate | A purified preparation of natural estrone sulfate; the piperazine acts as a buffer to increase the stability of estrone sulfate. (05 Mar 2000) |
|---|---|
| estrone | <chemical> 3-hydroxyestra-1,3,5(10)-trien-17-one. A metabolite of estradiol but possessing less biological activity. It is found in the urine of pregnant women and mares, in the human placenta, and in the urine of bulls and stallions. According to the fourth annual report on carcinogens (ntp 85-002, 1985), estrone may reasonably be anticipated to be a carcinogen (merck, 11th ed). Chemical name: Estra-1,3,5(10)-trien-17-one, 3-hydroxy- (12 Dec 1998) |
| estrone reductase | <enzyme> Enzyme from porcine endometrium catalyses NADPH-dependent reduction of estrone to estradiol; is not the reverse reaction for estradiol dehydrogenase from this source Registry number: EC 1.1.1.- (26 Jun 1999) |
| estrone unit | The oestrogenic activity of 0.1 ug (0.0001 mg) of a standard preparation of crystalline estrone. (05 Mar 2000) |