3-Hydroxyoestra-1,3,5(10),7-tetraen-17-on

172.2 Ų [M-H]- [CCS Type: DT; Buffer gas: N2; Ionization: ESI-; Dataset: TOXCAST; Source Identifier: DTXSID7047433]

157.92 Ų [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]；153.17 Ų [M+H-H2O]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]；160.72 Ų [M+Na]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]

Danger

H302 (20.5%): Harmful if swallowed [Warning Acute toxicity, oral]；H312 (20.5%): Harmful in contact with skin [Warning Acute toxicity, dermal]；H332 (20.5%): Harmful if inhaled [Warning Acute toxicity, inhalation]；H351 (98.8%): Suspected of causing cancer [Warning Carcinogenicity]；H360 (32.5%): May damage fertility or the unborn child [Danger Reproductive toxicity]；H361 (66.3%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]；H362 (32.5%): May cause harm to breast-fed children [Reproductive toxicity, effects on or via lactation]

P203, P260, P261, P263, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P318, P321, P330, P362+P364, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 83 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Estrogens enter the cells of responsive tissues (e.g., female organs, breasts, hypothalamus, pituitary) where they interact with a protein receptor, subsequently increasing the rate of synthesis of DNA, RNA, and some proteins. Estrogens decrease the secretion of gonadotropin-releasing hormone by the hypothalamus, reducing the secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary.

Equilin is a component of Premarin (conjugated estrogens), a mixture of the water soluble salts of sulfate esters from estrone, equilin, 17 alpha-dihydroequilin, and other related steroids, may be derived from pregnant equine urine or yam and soy plants. Estrogens are important in the development and maintenance of the female reproductive system and secondary sex characteristics. They promote growth and development of the vagina, uterus, and fallopian tubes, and enlargement of the breasts. Indirectly, they contribute to the shaping of the skeleton, maintenance of tone and elasticity of urogenital structures, changes in the epiphyses of the long bones that allow for the pubertal growth spurt and its termination, growth of axillary and pubic hair, and pigmentation of the nipples and genitals. Decline of estrogenic activity at the end of the menstrual cycle can bring on menstruation, although the cessation of progesterone secretion is the most important factor in the mature ovulatory cycle. However, in the preovulatory or nonovulatory cycle, estrogen is the primary determinant in the onset of menstruation. Estrogens also affect the release of pituitary gonadotropins. The pharmacologic effects of conjugated estrogens are similar to those of endogenous estrogens.

Estrogens enter the cells of responsive tissues (e.g., female organs, breasts, hypothalamus, pituitary) where they interact with a protein receptor, subsequently increasing the rate of synthesis of DNA, RNA, and some proteins. Estrogens decrease the secretion of gonadotropin-releasing hormone by the hypothalamus, reducing the secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary.

Hepatic

Hepatic.