product name:	ethynyl estradiol
synonyms:	neo-estrone;ethynylestradiol;ethinyl estradiol;lynoral;17alpha-ethynyl-delta1,3,5(10)-estra-triene-3,17beta-diol;17alpha-ethynylestradiol;17alpha-ethinylestradiol
cas:	57-63-6
mf:	c20h24o2
mw:	296.4
einecs:	200-342-2
mol file:	57-63-6.mol
molecular structure

ethynyl estradiol is a synthetic analog of estradiol, often used in combination with a progestin. efficacy of administration is facilitated by the ethynyl substitution at the c-17 position, which inhibits first pass hepatic metabolism. rapidly absorbed from gastrointestinal tract.

function:

1 supplement estrogen therapy adverse female gonadal function, amenorrhea, menopausal syndrome; for advanced breast cancer (in postmenopausal women), advanced prostate cancer treatment; in combination with progestin drugs, can inhibit ovulation, can be used contraceptives. the main clinical drug used to inhibit ovulation; also used in pediatric cryptorchidism and androgen excess, pituitary tumors. for the diagnosis of hypothalamic - pituitary - gonadal dysfunction, which can be carried out in accordance with gonadotropin and sex hormone levels.

2 treatment of hypogonadotropic hypogonadism due to amenorrhea and infertility, polycystic ovarian infertility. amenorrhea associated with weight loss, you should use correct diet weight. also for prostate cancer (often in combination with cyproterone or fluoro methyl imide), delayed puberty or early endometrial bit different. used primarily for inhibiting ovulation to achieve the purpose of contraception.