2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-3,4-dihydro-2H-chromen-6-yl pyridine-3-carboxylate

Looking at this chemical question, I want to study the chemical structure of a substance with symbols and terminology. I will use the ancient style of "Tiangong Kaiwu" to solve this puzzle for you.
The questions involved in the
question include "2% 2C5% 2C7% 2C8 -tetraamino-2 - (4% 2C8% 2C12 -triaminotriaminoglyguanidine) ", which is the identification of the group in the molecular structure; and "-3% 2C4 -dicyano- 2H -chromene-6 -ylpyridine-3 -carboxylic anhydride", each part is important to the overall structure.
In the field of organic chemistry, such combinations need to be based on the characteristics of functional groups and the laws of atomic bonding. "Tetraamino", "triaminothirteen guanidine", "dicyanide", "chromene", "pyridine", "carboxylic anhydride", etc., all have unique chemical properties and bonding patterns.
From this point of view, the structure of this compound is based on chromene rings, with pyridine groups connected at specific positions, and there may be special electron cloud distribution and spatial orientation at the connection of the two. On the pyridine ring, 6-position chromene, 3-position carboxylic anhydride. The chromene ring is connected to the tetraamino group at the 2-position, and this structure contains 4% 2C8% 2C12-triaminotrigonadine. And "3% 2C4-dicyano" is also related to 2H-chromene, or affects the molecular conjugation system and electron density.
This structure makes the compound have unique chemical activity and physical properties, or has potential applications in drug synthesis, materials science, etc., and can exhibit special reactivity and functionality due to the synergy of each group.

The content of this paragraph seems to be a complex expression related to chemistry, including information on various chemical groups, elements, reactions and uses of substances. However, its expression is peculiar, mixed with many special symbols and non-standard combinations. It is necessary to sort out the exact meaning before answering accurately.
Such as "2% 2C5% 2C7% 2C8" or a specific chemical number or related parameters; "5%E5%9B%9B%E7%94%B2%E5%9F%BA" should refer to "tetraethyl"; "2% E8% 89% B2% E7% 83% AF" or refers to "dichromatic light" (the expression here is questionable); "3%E7%BE%A7%E9%85%B8%E9%85%AF" is likely to be "tricarboxylic anhydride".
As far as the "main use of tricarboxylic anhydride" is concerned, it is quite crucial in the field of organic synthesis. It is often used as an acylating agent to react with alcohols, amines, etc. to construct important organic compounds such as esters and amides. It is widely used in drug synthesis and helps to develop many new drug molecular structures. In the preparation of polymer materials, tricarboxylic anhydride can participate in polymerization reactions to improve material properties, such as improving heat resistance, mechanical strength, etc. In the coating industry, it is used as a raw material to improve the film-forming, adhesion and chemical resistance of coatings. In the field of fragrance synthesis, it also plays a role in the generation of compounds with unique aromas through specific reactions.
However, due to the existence of many ambiguities and irregularities in the original statement, the above interpretation may be biased, and the practical application needs to be studied in detail according to the accurate chemical situation and professional knowledge.

I look at this question, but it is actually related to the exploration of the properties of substances. The elements and groups involved are complex, so let me elaborate.
The first word is "2% 2C5% 2C7% 2C8 -tetraamino-2- (4% 2C8% 2C12 -triaminotridecyl) -3% 2C4 -diketone-2H -chromene-6 -group to its -3 -carboxylic anhydride". This compound has a complex structure and contains many special groups. Its physical properties and color may be expressed by the existence of a conjugated system, or it may be a certain color, because the chromene structure is often related to color.
In terms of solubility, due to the presence of amino groups, carboxyl groups and other polar groups, in polar solvents such as water and alcohols, there may be a certain solubility. However, it has larger alkyl chains, and hydrophobicity also exists. In non-polar solvents such as alkanes, the solubility may be limited.
In terms of melting point and boiling point, due to the interaction of hydrogen bonds, van der Waals forces, etc. between molecules, and the relatively complex structure, its melting point, boiling point, or higher. Amino groups can form hydrogen bonds, enhance the intermolecular force, and cause the melting boiling point to rise.
The density may be affected by the compactness of the molecular structure and the type of atoms. This compound has a variety of atoms, complex structures, and density may be different from common simple compounds.
This is my inference of the physical properties of "2% 2C5% 2C7% 2C8-tetraamino-2- (4% 2C8% 2C12-triaminotridecyl) -3% 2C4-diketone-2H-chromene-6-group to its-3-carboxylic anhydride", which is for reference only. The actual properties need to be determined experimentally.

To make caseic anhydride, you can follow the following method. First take four things, which are 2, 5, 7, and 8. These four things are tetraamino, and there is one 2. There are four other things, which are 4, 8, and 12. This is triaminothirteen guanidine. Take 3 and 4 again, which are oxidized. Complex 2H, and there is a substance that changes color when it encounters it. There is another 6, which is the base to it. There are still 3.
Mix the above things in sequence. First mix the tetraamino group with the triaminothirteen guanidine group, stir it slowly, and see its color change. This is because of 2H. When its color changes, add the dioxide, and continue to stir. In the meantime, pay attention to the temperature and stirring speed, so as not to make it messy.
When the reaction is complete, add 6 things, that is, base to the other, adjust the direction, so that it is suitable for the production of caseic anhydride. Finally, add 3 things, so that it can fully react, to obtain caseic anhydride.
In this process, the amount, temperature, stirring speed, etc. of each thing must be precisely controlled, and there is a slight difference, or the caseic anhydride is impure, or the reaction is not as expected. When making, be careful to do this.

"2% 2C5% 2C7% 2C8" or the number of a specific house in Qimen's Escape Armor, "tetraethyl", "triethyl thirteen chicken base", etc., or the name of Qimen pattern, "dioxy", "2H" and "color flame" also have their own references, which are closely related to the five elements of Qimen, astrology, and gods and evil.
Then ask "the price range of hydroxylamine in the market", which depends on the current market conditions. The price of hydroxylamine often varies depending on purity, supply and demand, and production process. In the current market, if it is an ordinary pure hydroxylamine solution commonly used in industry, the price may be thousands of yuan per ton; if it is a high-purity, electronic-grade hydroxylamine product, the price may reach tens of thousands of yuan per ton.
However, the market is changing, and fluctuations in raw material prices, policy effects, and sudden supply and demand changes can all cause hydroxylamine prices to fluctuate. To know the exact price, you need to check the chemical product trading platform and consult the industry merchants to get the exact number.