cholesterol; compound with acetic acid | 147609-78-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: cholesterol; compound with acetic acid
• 英文别名: Cholesterin; Verbindung mit Essigsaeure；acetic acid;(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol
• CAS: 147609-78-7
• 化学式: C₂H₄O₂*C₂₇H₄₆O
• 分子量: 446.714
• InChiKey: URTRVQAVYOEHKK-KPNWGBFJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.48
• 重原子数：
  32
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  57.5
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  cholesterol; compound with acetic acid 生成 溶剂黄146
  参考文献：
  名称：

  Comparison of Crystallization Fouling in Plate and Double-Pipe Heat Exchangers

  摘要：

  The selection of fouling resistances to design plate-and-frame heat exchangers is usually based on experience or guess work. The primary aim of this study, was to compare fouling resistances for plate heat exchangers with values obtained in a parallel double-pipe heat exchanger under comparable operating conditions. The double-pipe heat exchanger it-as selected because it represents a shell-and-tube heat exchanger in a simplified form. Correction factors for plate heat exchangers have been obtained by comparing the performance of the two heat exchanger types during calcium sulfate crystallization fouling. Fouling was investigated in both heat exchangers for two conditions: (1) particles present in the process solution were allowed to enhance the crystallization process and (2) particles present in the process solution were removed by an in-line 1-mum filter. For similar flow velocities, the plate heat exchanger was found to foul significantly less than the double-pipe heat exchanger, i.e., 20-25 times less in the presence of particles and around 15 times less when the particles were filtered out. When data for similar overall shear forces are compared, results for both heat exchanger types are much closer, even though the plate heat exchanger still seems to perform somewhat better. Fouling in plate-and-frame heat exchangers was also found to depend significantly on plate design. This will add a further complication in direct comparison with shell-and-tube heat exchangers.

  DOI：

  10.1080/01457630152496287
• 作为产物：
  描述：

  cholesterol 、 溶剂黄146 生成 cholesterol; compound with acetic acid
  参考文献：
  名称：

  Comparison of Crystallization Fouling in Plate and Double-Pipe Heat Exchangers

  摘要：

  The selection of fouling resistances to design plate-and-frame heat exchangers is usually based on experience or guess work. The primary aim of this study, was to compare fouling resistances for plate heat exchangers with values obtained in a parallel double-pipe heat exchanger under comparable operating conditions. The double-pipe heat exchanger it-as selected because it represents a shell-and-tube heat exchanger in a simplified form. Correction factors for plate heat exchangers have been obtained by comparing the performance of the two heat exchanger types during calcium sulfate crystallization fouling. Fouling was investigated in both heat exchangers for two conditions: (1) particles present in the process solution were allowed to enhance the crystallization process and (2) particles present in the process solution were removed by an in-line 1-mum filter. For similar flow velocities, the plate heat exchanger was found to foul significantly less than the double-pipe heat exchanger, i.e., 20-25 times less in the presence of particles and around 15 times less when the particles were filtered out. When data for similar overall shear forces are compared, results for both heat exchanger types are much closer, even though the plate heat exchanger still seems to perform somewhat better. Fouling in plate-and-frame heat exchangers was also found to depend significantly on plate design. This will add a further complication in direct comparison with shell-and-tube heat exchangers.

  DOI：

  10.1080/01457630152496287

文献信息

• Additives and products including oligoesters
  申请人：——

  公开号：US20030199593A1

  公开（公告）日：2003-10-23

  The present invention relates to oligoesters and their use or the creation of additives. Oligoester containing additives and/or oligoesters themselves may be used for formulating pharmaceutical preparations, cosmetics or personal care products such as shampoos and conditioners. These oligoesters are particularly useful for the creation of multi-purpose additives that can impart conditioning, long substantivity and/or UV protection. Individual oligoesters and oligoester mixtures are described.

  本发明涉及寡酯及其用途或添加剂的制备。含有寡酯的添加剂和/或寡酯本身可用于配制药物制剂、化妆品或个人护理产品，如洗发水和护发素。这些寡酯对于制备能够赋予调理、长效性和/或紫外线保护的多功能添加剂特别有用。描述了单独的寡酯和寡酯混合物。
• Preparation of 2,3,3',4' -biphenyltetracarboxylic acid tetraester
  申请人：Tsuji Tetsuro

  公开号：US20050090683A1

  公开（公告）日：2005-04-28

  2,3,3′,4′-Biphenyltetracarboxylic acid tetraester is predominantly produced by a process in which a phthalic acid diester is subjected to oxidative-coupling reaction in the presence of molecular oxygen and a catalyst comprising a rhodium-containing compound,.

  2,3,3′,4′-联苯四羧酸四酯主要是通过一种过程生产的，该过程中邻苯二甲酸二酯在分子氧和含铑化合物催化剂存在下进行氧化偶联反应。
• Process for production of biphenyltetracarboxylic acid tetraesters
  申请人：UBE INDUSTRIES, LTD.

  公开号：US20040039222A1

  公开（公告）日：2004-02-26

  A production process, especially a continuous production process, for a biphenyltetracarboxylic acid tetraester characterized by carrying out, in parallel, a step of preliminarily mixing a phthalic acid diester and a palladium compound-containing catalyst to prepare a starting mixture, a step of continuously or intermittently supplying the starting mixture to a reactor, a step of conducting oxidative dimerization reaction of the phthalic acid diester in a temperature range of from 140° C. and lower than 250° C. while supplying molecular oxygen to the reactor to form a reaction mixture in the reactor, and a step of continuously or intermittently removing a portion of the reaction mixture from the reactor. Preferably, the palladium compound-containing catalyst in the starting mixture is dissolved in the phthalic acid diester, the palladium compound-containing catalyst comprises a palladium compound, a bidentate ligand and a copper compound, the reactor consists of a plurality of serially connected reactors and a carboxylic acid is also continuously or intermittently supplied to the reactor.

  一种生产过程，特别是用于制备二苯四羧酸四酯的连续生产过程，其特征在于并行进行以下步骤：预先混合邻苯二甲酸二酯和含钯化合物催化剂以制备起始混合物的步骤；连续或间歇地将起始混合物供给反应器的步骤；在向反应器供给分子氧以在温度范围从140°C至低于250°C内进行邻苯二甲酸二酯的氧化二聚反应以在反应器中形成反应混合物的步骤；以及连续或间歇地从反应器中移除部分反应混合物的步骤。优选，起始混合物中的含钯化合物催化剂溶解在邻苯二甲酸二酯中，含钯化合物催化剂包括钯化合物、双齿配体和铜化合物，反应器由多个串联的反应器组成，并且还连续或间歇地向反应器供给羧酸。
• Complexes of cholesterol with carboxylic acids and their amides
  作者：D. V. Ioffe、I. M. Ginzburg

  DOI：10.1007/bf00579960

  日期：——

  of cholesterol and carboxylic acids binary complexes, each with a hydrogen bond, in which the cholesterol is the acceptor and the acid the donor of a proton, are formed. With an increase in concentration, these complexes form aggregates through two types of hydrogen bond between the activated hydroxyl of the cholesterol and the oxygen atom of the C=0 or the OH group of the acid. In crystalline complexes

  红外光谱已经表明，在胆固醇和羧酸二元复合物的等摩尔混合物的稀释溶液中，每种复合物都有一个氢键，其中胆固醇是受体，酸是质子的供体。随着浓度的增加，这些配合物通过胆固醇的活化羟基与C=0的氧原子或酸的OH基之间的两种氢键形成聚集体。在胆固醇与羧酸的结晶复合物中，仅实现了 COOH...OH...O=C 氢键。已经得出结论，为了与胆固醇形成结晶复合物，第二组分必须是 H 键质子的受体和供体。
• Imidazoline quats
  申请人：Croda, Inc.

  公开号：US20040220062A1

  公开（公告）日：2004-11-04

  Mixture of dialkyl imidazoline quats with specified substitution content are provided. In one embodiment, at least a portion of the mixture includes at least one dialkyl imidazoline quat having at least one C 16 -C 30 alkyl group; the C 16-30 substitution content of the mixture being from about 10% to about 95% with respect to C 10+ reference substitution range. Methods of making imidazoline quats and quat mixtures, personal care and cosmetic products and formulations that contain the imidazoline quats and quat mixtures, methods of making such personal care and cosmetic products and formulations, and methods of using the such imidazoline quats, quat mixtures, and personal care and cosmetic products and formulations are also provided. Various embodiments are disclosed.

  提供具有指定取代含量的二烷基咪唑啉季铵盐混合物。在一个实施例中，至少部分混合物包括至少一种具有至少一个C16-C30烷基基团的二烷基咪唑啉季铵盐；混合物的C16-C30取代含量相对于C10+参考取代范围约为10%至95%。还提供制备咪唑啉季铵盐和季铵盐混合物的方法，包含咪唑啉季铵盐和季铵盐混合物的个人护理和化妆品产品和配方，制备这种个人护理和化妆品产品和配方的方法，以及使用这种咪唑啉季铵盐、季铵盐混合物、个人护理和化妆品产品和配方的方法。还披露了各种实施例。