Levonorgestrel

Levonorgestrel（CAS 797-63-7）：分子式 C21H28O2、分子量 312.4。

产品概览

应用领域

登记用途：Uses: MEDICATION、Used as a combined oral contraceptive with ethinylestradiol in monophasic、biphasic、and triphasic regimens. It is also used as a 'progestin-only' contraceptive pill and subdermal implant.、MEDICATION、Use (kg、approx.) in Germany (2009): >50、Consumption (g per capita、approx.) in Germany (2009): 0.000611、Calculated removal (%): 24.5、For the treatment of menopausal and postmenopausal disorders and alone or in combination with other hormones as an oral contraceptive.、Use Classification: Pharmaceuticals、Methods of Manufacturing: In a representative chemical synthesis、6-methoxy-alpha-tetralone is reacted with vinylmagnesium bromide、and the resulting 1、2、3、4-tetrahydro-6-methoxy-1-vinyl-1-naphthol is condensed with 2-ethyl-1、3-cyclopentanedione to form initially a tricyclic intermediate (secosteroid) containing all of the gonane skeleton carbon atoms. Cyclization of the secosteroid via dehydration yields a 13-ethylgona-1、5(10)-8、14-pentaene structure which is then successively reduced and ethynylated.、Prepn: H. Smith、Belg. pat. 623、844 (1963)、C.A. 61、4427c (1964)、G.A. Hughes、H. Smith、U.S. pat. 3、959、322 (1976 to Herchel Smith)、The activity of norgestrel is found in the levorotatory form D-l-norgestrel or levonorgestrel. Synthesis of the levorotatory form involves meta-cresol methyl ether、dimethyl malonate and trans-1、4-dibromo-2-butene as starting materials. The steroid skeleton was constructed by using an intramolecular Diels-Alder reaction of an ortho-quinodimethane derivative、preceded by photo-enolization of an appropriate methyl-substituted acetophenone derivative. Chirality was introduced at an early stage during a nucleophilic substitution reaction. It is not known if this synthesis is used commercially.、Impurities: Reported impurities include: 13-ethyl-3、4-diethynyl-18、19-dinor-17alpha-pregn-5-en-20- yn-3beta、4alpha、17-triol、13-ethyl-3、19-dinor-17alpha-pregn-5-en-20-yn-3alpha、17- triol 13-ethyl-18、19-dinor-17alpha-pregn-4-en-20-yn-17-ol、13-ethyl-3-ethynyl-18、19-dinor-17alpha-pregna-3、5-dien-20-yn-17-ol、13-ethyl-17-hydroxy-18、19-dinor-17alpha-pregna-4、8(14)- dien-20-yn-3-one and 13-ethyl-17-hydroxy-18、19-dinor-17alpha-pregn-5(10)-en-20-yn-3-one.、Formulations、Preparations: Mixture of levonorgestrel with ethinyl estradiol. Levlen、Logynon、Microgynon、Nordette、Ovran、Ovranette、Tetre-gynon、Tri-Levlen、Trinordiol、Triphasil. Clinical trial in acne treatment.、Mixture with ethinyl estradiol. Lo、Ovral、Stediril. Clinical efficiacy as oral contraceptive.、Norgestrel is available commercially as a single-ingredient tablet and as a component of combination tablets with ethinylestradiol、estradiol valerate or as combined injectable solution with ethinylestradiol.、Oral: Tablets: Norgestrel and Ethinyl Estradiol 0.3 mg、0.03 mg、Low-ogestrel (Watson Pharma).、Oral: Tablets: 2 mg estradiol valerate (white tablets taken day 1-11)、500 ug norgestrel + 2 mg estradiol valerate (pale brown tablets taken day 12-21)、Cyclo-Progynova (Meda Pharmaceuticals).、Levonorgestrel is available commercially as a single-ingredient tablet and in combined tablets with estradiol、estradiol valerate、estriol and ethinylestradiol ... It is also available as an intrauterine system and as a flexible、closed-capsule implant made of silicone rubber tubing.、Plan B (levonorgestrel) tablets、0.75 mg、are available for a single course of treatment in PVC、aluminum foil blister packages of two tablets each.、General Manufacturing Information: A synthetic steroid hormone used as an ingredient of oral contraceptives、The activity of norgestrel is found in the levorotatory form D-l-norgestrel or levonorgestrel.、...was manufactured or formulated in Augentina、Australia、Austria、Belgium、Brazil、Canada、Finland、France、German、India、Mexico、the Netherlands、New Zealand、Portugal、South Africa、Spain、Switzerland、the United Kingdom and the U.S.。

技术档案

这个产品是什么

Levonorgestrel 是一种化工化合物，登记 CAS 号为 797-63-7，分子式 C21H28O2（分子量 312.4）。

识别信息

登记 CAS 号：797-63-7

其分子式 C21H28O2 由 21 个碳、28 个氢、2 个氧 组成。

别名/同义词：Levonorgestrel · D(minus)-norgestrel

常见问题

PubChem 公开数据