Disodium (2E)-3,3'-Dioxo-1,1',3,3'-Tetrahydro-2,2'-Biindole-5,5'-Disulfonate

(2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disodium disulfonic acid salt. The chemical properties of this substance are unique and interesting to explore.
It is water-soluble and can be ionic in water. This property is derived from the sulfonic acid group, which has strong hydrophilicity and allows it to be well dispersed in the aqueous phase system. Looking at its structure, the biindole skeleton endows it with certain conjugate properties, so it has absorption in specific spectral regions. In terms of photophysical properties, the conjugate structure can initiate electronic transitions or cause it to fluoresce in the visible or ultraviolet regions, laying the foundation for optical related research and applications.
In terms of chemical activity, the 3,3 '-dioxo moiety has certain reactivity, or can participate in reactions such as nucleophilic addition. Because carbonyl carbon is positively charged, it is easy to be attacked by nucleophilic reagents. The compound can be structurally modified by such reactions to expand its application in the field of organic synthesis. In addition, although its sulfonic acid group is relatively stable, it can undergo changes such as sulfonation reverse reaction under specific strong acid or high temperature conditions, which is also a factor to be considered in the study of its chemical stability. Its sodium salt form exhibits unique chemical behavior in biological systems or some ion exchange processes, and may have potential application value in drug delivery, ion sensing and other fields.

(Diethyl) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonate dipotassium salt, which is useful in medicine, materials science, organic synthesis and many other fields.
In the field of medicine, it can be used as a potential pharmaceutical active ingredient. Because of its unique chemical structure, it may interact with specific biological targets and regulate physiological processes. If found by research, this substance may have inhibitory effects on the growth of some cancer cell signaling pathways, or may provide a new direction for the development of anti-cancer drugs; and because it may regulate the transmission of neurotransmitters, it also has potential value in the treatment of nervous system diseases, such as Parkinson's disease, Alzheimer's disease, etc.
In the field of materials science, this substance can be used to prepare functional materials. With its good optical and electrical properties, it can be used to manufacture organic Light Emitting Diodes (OLEDs), improve its luminous efficiency and stability, and make the display device picture clearer and brighter colors; in the preparation of sensor materials, the substance may selectively react with specific analytes to generate detectable signals, enabling accurate detection of biomolecules, metal ions, etc.
In the field of organic synthesis, this dipotassium salt is an important intermediate. Chemists can modify and derive its structure through various chemical reactions to synthesize complex and functional organic compounds. By introducing different substituents and changing their physical and chemical properties, it can meet the application needs of different fields.
In short, (diethyl) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonate dipotassium salt has shown important application value in many key fields. With the deepening of research, it is expected to bring new breakthroughs to the development of various fields.

The method of preparing (2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid dipotassium salt is quite complicated and requires detailed steps.
First, take an appropriate amount of indole as the starting material. In a suitable reactor, add indole, and then inject an appropriate amount of solvent, such as dichloromethane or N, N -dimethylformamide, which can well dissolve indole and are chemically stable under subsequent reaction conditions.
Then, add a sulfonating agent, such as concentrated sulfuric acid or chlorosulfonic acid, to it. When adding, be careful, add it slowly, and stir at a constant speed with a stirring device to make the reaction system mix evenly, and pay close attention to temperature changes. Because the sulfonation reaction is an exothermic reaction, if the temperature is out of control, it is easy to cause side reactions to occur. The temperature can be controlled in an ice bath or a cold water bath to maintain the temperature at 0-10 ° C. This step of the reaction aims to introduce the 5-position of the indole into the sulfonic acid group.
After the sulfonation reaction is completed, an intermediate product containing 5-sulfonic indole is obtained. After separation and purification, such as extraction, recrystallization, etc., the impurities are removed to obtain a pure 5-sulfonic indole.
Next, 5-sulfonyl indole is mixed with a suitable oxidant, such as potassium persulfate or sodium periodate. In an alkaline environment, the basic reagent can be selected from an aqueous solution of potassium carbonate or potassium hydroxide. The reaction temperature is raised to 40-60 ° C and stirred continuously for several hours. This oxidation step prompts the coupling of two molecules of 5-sulfonyl indole to form (2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid.
Finally, a potassium salt, such as potassium carbonate or potassium hydroxide, is added to the reaction system to react with (2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid to generate the corresponding two potassium salts. After the reaction is completed, pure (2E) -3,3' -dioxo-1,1 ', 3,3' -tetrahydro-2,2 '-biindole-5,5' -disulfonic acid dipotassium salt product can be obtained by cooling, filtering, drying, etc. Each step requires precise operation and strict control of the reaction conditions to obtain the ideal product.

What you are asking is the market price of (2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid disodium salt. However, the price of this chemical often varies due to many factors, and it is difficult to be sure.
First, the difficulty of its production affects the price. If the preparation requires complicated processes and rare raw materials, the price must be high. Second, the state of market supply and demand is also the key. If there are many applicants and few producers, the price will rise; conversely, if the supply exceeds the demand, the price may drop. Third, the price varies depending on the merchant. The cost and strategy of each merchant are different, resulting in price differences.
To know the approximate price today, you need to visit the chemical raw material market, chemical reagent suppliers, or inquire about online chemical product trading platforms. However, the price of such platforms may not be real-time and is for reference only. In my opinion, the price may be between a few yuan per gram and a few dozen yuan, but this is only speculation. The actual price still needs to be checked in detail before the market situation can be known.

(2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid dipotassium salt This substance has a significant impact on the environment, which is of great concern to the world.
This substance may have a significant effect on the water environment. If it flows into rivers, lakes and seas, or because of its own chemical characteristics, it may interfere with the normal physiological process of aquatic organisms. In the case of algae, or change the efficiency of their photosynthesis, because the specific groups in the material structure can interact with the key proteins involved in photosynthesis in algal cells, causing the photosynthetic mechanism to be disrupted, thereby affecting the energy flow of the entire aquatic ecosystem.
In the soil environment, it also has an effect that cannot be ignored. It may interact with the charge on the surface of soil particles to change the physical and chemical properties of the soil, such as affecting the soil's ability to absorb and desorb nutrients, causing changes in the nutrients available to plants, resulting in a chain reaction on vegetation growth.
Furthermore, in the atmospheric environment, although the possibility of direct volatilization into the atmosphere is low, if the wastewater containing this substance is improperly treated and enters the atmosphere in the form of aerosols, it may also participate in complex chemical reactions in the atmosphere, affecting the chemical composition of the atmosphere and having a potential negative impact on air quality.
Therefore, (2E) -3,3 '-dioxo-1,1', 3,3 '-tetrahydro-2,2' -biindole-5,5 '-disulfonic acid dipotassium salt has extensive and complex environmental effects, and needs to be investigated in detail to clarify its harm, so as to implement proper prevention and control measures.