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来曲唑

更新时间:2024-01-02 12:55:26

来曲唑结构式
来曲唑结构式
品牌特惠专场
常用名 来曲唑 英文名 Letrozole
CAS号 112809-51-5 分子量 263.337
密度 1.1±0.1 g/cm3 沸点 472.0±55.0 °C at 760 mmHg
分子式 C17H11N5 熔点 181-183ºC
MSDS 中文版 美版 闪点 214.2±24.5 °C

 来曲唑用途


Letrozole是芳香酶抑制剂,其 IC50 为1-13 nM。

 来曲唑名称

中文名 来曲唑
英文名 Letrozole
中文别名 1-[双(4-氰基苯基)甲基]-1,2,4-三氮唑 | 4,4'-(1 H-1,2,4-三唑-1-基亚甲基)-双苯腈
英文别名 更多

 来曲唑物理化学性质

密度 1.1±0.1 g/cm3
沸点 472.0±55.0 °C at 760 mmHg
熔点 181-183ºC
分子式 C17H11N5
分子量 263.337
闪点 214.2±24.5 °C
精确质量 263.142242
PSA 78.29000
LogP 3.70
外观性状 白色至灰白色结晶粉末
蒸汽压 0.0±1.2 mmHg at 25°C
折射率 1.615
储存条件 -20°C Freezer

 来曲唑MSDS

 来曲唑安全信息

危害码 (欧洲) Xi: Irritant;C: Corrosive;
风险声明 (欧洲) R36/37/38
安全声明 (欧洲) 26-36
危险品运输编码 NONH for all modes of transport
RTECS号 DI4957000
海关编码 2933990090

 来曲唑合成线路

 来曲唑制备

【方法一】
4-溴甲基苯腈(I)和三唑在氯仿-乙腈中反应,生成物(Ⅱ)再和4-氟苯腈,在叔丁醇钾存在下,在二甲基甲酰胺中反应,即得来曲唑。

 来曲唑海关

海关编码 2933990090
中文概述 2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素 品名, 成分含量, 用途, 乌洛托品请注明外观, 6-己内酰胺请注明外观, 签约日期
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 来曲唑文献104

更多文献
Comparison of tamoxifen and letrozole response in mammary preneoplasia of ER and aromatase overexpressing mice defines an immune-associated gene signature linked to tamoxifen resistance.

Carcinogenesis 36(1) , 122-32, (2015)

Response to breast cancer chemoprevention can depend upon host genetic makeup and initiating events leading up to preneoplasia. Increased expression of aromatase and estrogen receptor (ER) is found in...

Hypogonadism Associated with Cyp19a1 (Aromatase) Posttranscriptional Upregulation in Celf1 Knockout Mice.

Mol. Cell. Biol. 35 , 3244-53, (2015)

CELF1 is a multifunctional RNA-binding protein that controls several aspects of RNA fate. The targeted disruption of the Celf1 gene in mice causes male infertility due to impaired spermiogenesis, the ...

Aromatase (Cyp19a1b) in the pituitary is dynamically involved in the upregulation of lhb but not fshb in the vitellogenic female ricefield eel Monopterus albus.

Endocrinology 155(11) , 4531-41, (2014)

Aromatase, encoded by Cyp19a1, is expressed in the pituitary of vertebrates; however, its physiological relevance remains poorly defined. In teleosts, the duplicated cyp19a1b is preferentially express...

 来曲唑英文别名

4,4'-(1H-1,2,4-triazol-1-ylmethylene)bis(benzonitrile)
UNII-7LKK855W8I
Letrozol
Letoval
5-[Bis(4-methylphenyl)methyl]-1H-1,2,4-triazole
1H-1,2,4-Triazole, 5-[bis(4-methylphenyl)methyl]-
4,4'-(1H-1,2,4-Triazol-1-ylmethylene)bisbenzonitrile
Femera
MFCD00866241
[14C]-Letrozole
4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzonitrile
4-[(4-cyanophenyl)-(1,2,4-triazol-1-yl)methyl]benzonitrile
Femara
Letrozole
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