3-羟基-2-甲基-5-甲氧基-1,4-苯醌 | 4502-01-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 3-羟基-2-甲基-5-甲氧基-1,4-苯醌
• 英文名称: 3-hydroxy-2-methyl-5-methoxy-1,4-benzoquinone
• 英文别名: 3-hydroxy-5-methoxy-2-methylbenzoquinone；3-hydroxy-5-methoxy-2-methyl-[1,4]benzoquinone；3-Hydroxy-5-methoxy-2-methyl-[1,4]benzochinon；2-hydroxy-3-methyl-6-methoxylbenzoquinone；2-hydroxy-3-methyl-6-methoxy-1,4-benzoquinone；2-hydroxy-3-methyl-6-methoxybenzoquinone；2-Methyl-3-Oxy-5-Methoxy-p-Chinon；3-hydroxy-5-methoxy-2-methylcyclohexa-2,5-diene-1,4-dione
• CAS: 4502-01-6
• 化学式: C₈H₈O₄
• 分子量: 168.149
• InChiKey: BFOTXRXRHJHTDX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  63.6
• 氢给体数：
  1
• 氢受体数：
  4

安全信息

• 海关编码：
  2914690090

反应信息

• 作为反应物：
  描述：

  3-羟基-2-甲基-5-甲氧基-1,4-苯醌 、 硫酸二甲酯 生成 3,5-二甲氧基-2-甲基环己-2,5-二烯-1,4-二酮
  参考文献：
  名称：

  ANJANEYULU, A. S. R.;NOOKA, RAJU S., PHYTOCHEMISTRY, 26,(1987) N 10, 2805-2810

  摘要：

  DOI：
• 作为产物：
  描述：

  2,3,6-三乙酰氧基-4-甲氧基甲苯 在 水 、 三氯化铁 作用下， 生成 3-羟基-2-甲基-5-甲氧基-1,4-苯醌
  参考文献：
  名称：

  The MMT Bag for Emission Source Sampling: Design and Evaluation

  摘要：

  This paper presents the design and evaluation results for a metal-coated multilayer Tedlar (MMT) bag that was developed for the collection of source emissions. The applicability of the MMT bag was evaluated for a number of important greenhouse relevant gases: CO, CO2, CH4, N2O, and total hydrocarbons (THCs). The bag was tested for durability and stability for a range of concentrations of the tested compounds using both laboratory-prepared samples and real source samples. The results show that all tested compounds were more stable when stored in the MMT bag than when stored in a regular Tedlar bag. These compounds can be stored at room temperature for at least 3 months without significant changes in concentration. When properly packed, the MMT bag is durable and may be shipped by air. The MMT bag is lower in cost, lighter in weight, and easier to clean, and it requires less devices during the subsequent laboratory analysis compared with a stainless steel canister, which is often used to collect air and source samples.

  DOI：

  10.1080/10473289.2001.10464257

文献信息

• The Acid-Catalyzed Oxidation of Methoxybenzenes to<i>p</i>-Benzoquinones by Dimethyldioxirane
  作者：Waldemar Adam、Masao Shimizu

  DOI：10.1055/s-1994-25523

  日期：——

  Methoxybenzenes 1 were oxidized to phenols and/or p-benzoquinones by dimethyldioxirane; in the presence of strong acids, the intermediate phenols were effectively converted to the p-benzoquinones 3.

  甲氧基苯 1 被二甲基二氧烯氧化成酚和/或对苯醌；在强酸的存在下，中间体酚有效地转化为对苯醌 3。
• Digital threshold colour control system
  申请人：ENZYMATICS, INC.

  公开号：EP0279988A1

  公开（公告）日：1988-08-31

  A system for the digital quantitative colorimetric analysis of NAD(P)H and biological fluids and organic compounds that generate NAD(P)H when reacted with a specific dehydrogenase. An NAD(P)H-dependent chromogen reduction occurs, which results in a visible color change. A known quantity of a competing reactant for the NAD(P)H is used, which prevents the chromogen from reacting and changing color until the reactant is consumed, the quantity of which corresponds to the threshold concentration of the NAD(P)H or the compound reacting to generate NAD(P)H. Disposable devices and methods of use are also disclosed.

  用于对 NAD(P)H 和生物液体以及与特定脱氢酶反应生成 NAD(P)H 的有机化合物进行数字定量比色分析的系统。NAD(P)H 会发生还原，从而导致可见的颜色变化。使用已知量的 NAD(P)H 竞争反应物，可防止发色剂发生反应和变色，直到反应物消耗殆尽，反应物的量相当于 NAD(P)H 或发生反应生成 NAD(P)H 的化合物的阈值浓度。此外，还公开了一次性装置和使用方法。
• Procédé de coloration directe des fibres kératiniques humaines à l'aide de colorants naturels et de vapeur d'eau
  申请人：L'OREAL

  公开号：EP0659397A1

  公开（公告）日：1995-06-28

  L'invention concerne un procédé de coloration directe des fibres kératiniques, caractérisé par le fait qu'il consiste à mettre en contact des fibres kératiniques sur lesquelles on a appliqué une composition contenant au moins un colorant naturel avec un gaz contenant de la vapeur d'eau, la température dudit gaz étant supérieure à 75°C, le temps de contact entre ledit gaz et lesdites fibres à colorer étant inférieur à deux minutes. Selon l'invention, les cheveux sont colorés de façon uniforme sur l'ensemble de la chevelure, des racines aux pointes, et ceci quel que soit l'état du cheveu.

  本发明涉及一种对角蛋白纤维进行直接染色的工艺，其特征在于：将涂有至少一种天然染料组合物的角蛋白纤维与含有水蒸气的气体接触，所述气体的温度高于 75°C，所述气体与所述待染纤维之间的接触时间少于两分钟。 根据本发明，无论头发的状况如何，头发从发根到发梢都能均匀着色。
• Composition for dyeing keratin fibers
  申请人：L'OREAL

  公开号：US10292920B2

  公开（公告）日：2019-05-21

  The present invention relates to a composition for dyeing keratin fibers, comprising (a) at least one direct dye; and (b) at least one sulfone compound represented by the following formula (I): wherein each of R1 and R2 independently denotes a monovalent C1-30 aliphatic group or a monovalent C6-30 aromatic group, which may optionally be substituted with at least one substituent; or R1 and R2, together with the sulfur atom which they are binding, form a 3-10 membered ring which may optionally be substituted with at least one substituent. The composition according to the present invention is a one-part composition and can prevent or reduce skin staining by the direct dye on the skin such as the scalp, while providing the keratin fibers with good cosmetic effects such as good coloring properties.

  本发明涉及一种用于角蛋白纤维染色的组合物，该组合物包含(a)至少一种直接染料；和(b)至少一种由下式(I)代表的砜类化合物：其中R1和R2各自独立地表示一价C1-30脂肪族基团或一价C6-30芳香族基团，它们可任选被至少一个取代基取代；或R1和R2与它们结合的硫原子一起形成一个3-10个成员的环，该环可任选被至少一个取代基取代。根据本发明的组合物是单组分组合物，可以防止或减少直接染料对头皮等皮肤的染色，同时为角蛋白纤维提供良好的美容效果，如良好的着色性能。
• Tori, Motoo; Sono, Masakazu; Takikawa, Keiko, Journal of Chemical Research, Miniprint, 1999, # 8, p. 2001 - 2019
  作者：Tori, Motoo、Sono, Masakazu、Takikawa, Keiko、Matsuda, Reiko、Toyota, Masao、Cheminat, Annie、Asakawa, Yoshinori

  DOI：——

  日期：——