3,4-dimethoxy-coumarin | 6850-95-9

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 3,4-dimethoxy-coumarin
• 英文别名: 3,4-Dimethoxy-cumarin；3,4-Dimethoxy-2H-chromen-2-one；3,4-dimethoxychromen-2-one
• CAS: 6850-95-9
• 化学式: C₁₁H₁₀O₄
• 分子量: 206.198
• InChiKey: JXGNMYHBTAZENZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3,4-dimethoxy-coumarin 在 盐酸 作用下， 生成 4-methoxy-3-hydroxycoumarin
  参考文献：
  名称：

  Arndt et al., Chemische Berichte, 1951, vol. 84, p. 333,340, 341,

  摘要：

  DOI：
• 作为产物：
  描述：

  3-bromo-chroman-2,4-dione 在 甲醇 、 乙醚 作用下， 生成 3,4-dimethoxy-coumarin
  参考文献：
  名称：

  Arndt et al., Chemische Berichte, 1951, vol. 84, p. 333,340, 341,

  摘要：

  DOI：

文献信息

• [EN] HEXAARYLBIIMIDAZOLE COMPOUNDS AND PHOTOPOLYMERIZATION INITIATOR COMPOSITIONS CONTAINING THE SAME<br/>[FR] COMPOSES A BASE D'HEXAARYL-BIIMIDAZOLE, ET COMPOSITIONS INITIATRICES DE PHOTOPOLYMERISATION CONTENANT CE COMPOSE
  申请人：SHOWA DENKO KK

  公开号：WO2004035546A1

  公开（公告）日：2004-04-29

  The present invention provides a novel hexaarylbiimidazole compound of the following formula (1): wherein each R1 represents a halogen, and each R2 represents an optionally substituted C1-4 alkyl group. The hexaarylbiimidazole compound of the present invention is useful as photoradical generators in photopolymerizable compositions used as resists and is characterized by low sublimating thermal decomposition products. The photopolymerizable compositions may be suitably used as resists or as color filters for color liquid crystal display elements, cameras and the like.

  本发明提供了一种新型的六芳基联双咪唑化合物，其化学式为（1），其中每个R1代表卤素，每个R2代表可选取代的C1-4烷基基团。本发明的六芳基联双咪唑化合物可用作光致自由基发生剂，用于光聚合组合物中作为抗蚀剂，并具有低升华热分解产物的特点。光聚合组合物可适当地用作抗蚀剂或彩色液晶显示元件、相机等的彩色滤光片。
• Heteroaryl Sulfones and Sulfonamides and Therapeutic Uses Thereof
  申请人：Reddy Premkumar E.

  公开号：US20070232649A1

  公开（公告）日：2007-10-04

  Compounds of Formula I: wherein R 1 , R 2 , M, Q and n are as defined herein, are useful as antiproliferative agents including, for example, as anticancer agents.

  式I的化合物：其中R1、R2、M、Q和n的定义如本文所述，可用作抗增殖剂，包括例如作为抗癌剂。
• Carbon dioxide sensor
  申请人：Pfizer Hospital Products Group, Inc.

  公开号：EP0304248A2

  公开（公告）日：1989-02-22

  A sensor for determining the partial pressure of carbon dioxide in a liquid, which comprises a carbon dioxide - permeable, liquid and ion-impermeable membrane enveloping an aqueous medium containing an absorber, a fluorescer and a source of bicarbonate ions, which medium exhibits variations in pH as a function of the partial pressure of dissolved carbon dioxide, the ratio of absorber to fluorescer and the characteristics of the absorption spectrum of the absorber and the excitation and emission spectra of the fluorescer being such that the partial pressure of carbon dioxide in the liquid may be determined from the pH of the aqueous medium as measured by the intensity of the fluorescent emission of the fluorescer.

  一种用于测定液体中二氧化碳分压的传感器，它包括一层二氧化碳可渗透、液体和离子不可渗透的膜，该膜包裹着含有吸收剂、荧光剂和碳酸氢根离子源的水介质，该介质的 pH 值随溶解的二氧化碳分压的变化而变化、吸收剂和荧光剂的比例以及吸收剂的吸收光谱和荧光剂的激发光谱和发射光谱的特性使得液体中二氧化碳的分压可以通过荧光剂的荧光发射强度测量水介质的 pH 值来确定。
• A method for measuring the concentration of carbon dioxide in a medium
  申请人：BIOMEDICAL SENSORS LTD.

  公开号：EP0510728A2

  公开（公告）日：1992-10-28

  A sensor system for determining the pH or carbon dioxide concentration of a liquid medium comprising, in combination, a pH-insensitive fluorescent indicator and a pH-sensitive fluorescent indicator which act in concert or a single fluorescence indicator which emits fluorescent signals of different wavelengths in different carriers, which system(s) produce diverging signals, the ratio of which provides an accurate and stable determination of the parameter being measured. A method for determining pH and CO₂ concentration is also disclosed.

  一种用于确定液体介质的 pH 值或二氧化碳浓度的传感器系统，该系统由对 pH 值不敏感的荧光指示剂和对 pH 值敏感的荧光指示剂组合而成，这两种荧光指示剂协同作用，或由单一荧光指示剂在不同载体中发出不同波长的荧光信号，这两种系统产生不同的信号，其比率可准确稳定地确定被测参数。此外，还公开了一种测定 pH 值和 CO₂ 浓度的方法。
• Sensor system
  申请人：SHILEY INCORPORATED

  公开号：EP0283116B1

  公开（公告）日：1993-01-27