合成代谢类固醇Lentaron激素Formestan女性癌症治疗

产品详情：

Lentaron）
Lentaron）CAS号：566-48-3
Lentaron）分子式：C19H26O3
Lentaron）分子量：302.4126
Lentaron）说明：白色结晶性粉末
Lentaron）规格：企业标准
Lentaron）包装：1kg /铝箔袋
Lentaron）订购数量：10g
Lentaron）付款：西联汇款，Moneygram，T / T
Lentaron）发货：EMS，DHL，FedEx
Lentaron）交货：安全，及时，约7天后付款。

产品描述：

Formestan是第一种选择性的I型甾体芳香酶抑制剂，用于治疗绝经后妇女的雌激素受体阳性乳腺癌。 Formestan抑制合成代谢类固醇或激素原的雌激素生成。它还充当4-羟基睾酮的激素原，4-羟基睾酮是除了作为温和芳香酶抑制剂之外显示弱雄激素活性的活性类固醇。它被世界反兴奋剂机构列为禁用物质用于运动员。

Formestan具有差的口服生物利用度，因此必须通过肌内注射每两周（每两周一次）施用。一些临床数据表明，250mg的临床推荐剂量太低。随着新的，非类固醇和类固醇芳香酶抑制剂的发现，口服活性和比福美司坦更廉价，福美坦失去了普及。

目前，根据世界反兴奋剂机构的规定，禁止将formestan（分类为抗雌激素药）用于运动。它不是美国FDA批准，并且在欧洲批准的formestan（Lentaron）的肌内注射形式已经撤销。

Formestan（Lentaron）是I型，甾体芳香酶抑制剂。它用于治疗绝经后妇女的雌激素受体阳性乳腺癌。它可作为肌肉内贮库注射剂使用。

福美斯坦通常用于抑制合成代谢类固醇或激素原的雌激素产生。它还充当4-羟基睾酮的激素原，4-羟基睾酮是一种活性类固醇，除了作为温和的芳香酶抑制剂外，还显示弱雄激素活性。

Formestan具有差的口服生物利用度，因此已不再普及，因为已鉴定出许多口腔活性芳香酶抑制剂。

应用：

Formestan是第二代，不可逆的甾族芳香酶抑制剂。它抑制负责将雄激素转化为雌激素的芳香酶，从而防止雌激素产生。乳腺癌可以是雌激素敏感的或不敏感的。大多数乳腺癌是雌激素敏感的。雌激素敏感的乳腺癌细胞依赖于雌激素的活力。因此，从身体中去除雌激素可以是激素敏感性乳腺癌的有效治疗。 Formestan已专门用于治疗绝经后妇女。与在卵巢中产生最多雌激素的绝经前妇女不同，绝经后妇女在芳香酶的帮助下在外周组织中产生最多的雌激素。福美斯坦（一种芳香酶抑制剂）因此可以通过阻断外周组织（即，乳房组织）中的芳香酶来治疗激素敏感性乳腺癌，从而有助于降低雌激素的局部产生。

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Anabolic Steroids Lentaron Hormone Formestan for Female Cancer Treatment

Product details:

Lentaron)
Lentaron) CAS Number: 566-48-3
Lentaron) Molecular Formula: C19H26O3
Lentaron) Molecular Weight: 302.4126
Lentaron) Description: White crystalline powder
Lentaron) Specification: Enterprise Standard
Lentaron) Packing: 1kg/aluminum foil bag
Lentaron) Min. Order quantity: 10g
Lentaron) Payment: Western Union, Moneygram, T/T
Lentaron) Shipment: EMS, DHL, FedEx
Lentaron) Delivery: Safe & timely, around 7days after payment.

Product Description:

Formestan was the first selective, type I, steroidal aromatase inhibitor used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. Formestan suppresses estrogen production from anabolic steroids or prohormones. It also acts as a prohormone to 4-hydroxytestosterone, an active steroid which displays weak androgenic activity in addition to acting as a mild aromatase inhibitor. It is listed as a prohibited substance by the World Anti-Doping Agency for use in athletes.

Formestan has poor oral bioavailability, and thus must be administered forthnightly (bi-weekly) by intramuscular injection. Some clinical data has suggested that the clinically recommended dose of 250mg was too low. With the discovery of newer, non-steroidal and steroidal, aromatase inhibitors which were orally active and less expensive than formestan, formestan lost popularity.

Currently, formestan (categorized as an anti-estrogenic agent) is prohibited from use in sports in accordance to the regulations of the World Anti-Doping Agency. It is not US FDA approved, and the intramuscular injection form of formestan (Lentaron) which was approved in Europe has been withdrawn.

Formestan (Lentaron) is a type I, steroidal aromatase inhibitor. It is used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. It is available as an intramuscular depot injection.

Formestan is often used to suppress estrogen production from anabolic steroids or prohormones. It also acts as a prohormone to 4-hydroxytestosteron, an active steroid which displays weak androgenic activity in addition to acting as a mild aromatase inhibitor.

Formestan has poor oral bioavailability and as such is no longer popular as many orally active aromatase inhibitors have been identified.

Applications:

Formestan is a second generation, irreversible, steroidal aromatase inhibitor. It inhibits the aromatase enzyme responsible for converting androgens to estrogens, thereby preventing estrogen production. Breast cancer may be estrogen sensitive or insensitive. A majority of breast cancers are estrogen sensitive. Estrogen sensitive breast cancer cells depend on estrogen for viability. Thus removal of estrogen from the body can be an effective treatment for hormone sensitive breast cancers. Formestan has been targeted specifically for the treatment of postmenopausal women. Unlike premenopausal women who produce most estrogen in the ovaries, postmenopausal women produce most estrogen in peripheral tissues with the help of the aromatase enzyme. Formestan, an aromatase inhibitor, can thus help to decrease the local production of estrogen by blocking the aromatase enzyme in peripheral tissues (ie. Adispose tissue of the breast) to treat hormone sensitive breast cancer.

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