(3E)-5-(Acetylamino)-3-{[4-(Acetylamino)Phenyl]Hydrazono}-4-Oxo-3,4-Dihydronaphthalene-2,7-Disulfonic Acid

(3E) -5- (acetamido) -3- {[4- (acetamido) phenyl] hydrazone} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid, this is an organic compound. To clarify its chemical structure, consider its name.
"Naphthalene" is a fused cyclic aromatic hydrocarbon with a specific cyclic structure. In this compound, the naphthalene ring is a group. "3,4-dihydro", showing the hydrogenation of the double bond between the 3rd and 4th positions of the naphthalene ring, resulting in a change in its saturation. " 4-Oxo ", the 4-position of the epitaphthalene ring has a carbonyl group, that is, a carbon-oxygen double bond.
" 5- (acetamido) ", refers to the 5-position of the naphthalene ring with an acetamido group, which is formed by the connection of an acetyl group and an amino group." 3 - {[4 - (acetamido) phenyl] hydrazone} ", which means that the 3-position of the naphthalene ring is connected to a hydrazone group, and this hydrazone group is connected to a 4- (acetamido) phenyl group, and the 4-position of this phenyl group also has an acetamido group.
" 2,7-disulfonic acid ", indicating that the 2-position and 7-position of the naphthalene ring
In combination, this compound takes the naphthalene ring as the core and is connected with acetamide, hydrazone, carbonyl and sulfonic acid groups at specific positions. By means of the mutual connection and spatial distribution of these groups, a unique chemical structure is formed, which endows the compound with specific physical and chemical properties.

(3E) -5- (acetamido) -3- {[4- (acetamido) phenyl] hydrazone} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid, although this compound is not directly recorded in "Tiangong Kaiwu", it is deduced from the idea of ancient technology and material use. It may have the following main applications.
First, because it contains sulfonic acid groups, it may have important uses in the dyeing and weaving industry. Ancient dyeing and weaving required quite high requirements for dyes, requiring bright colors and durability. This compound has a complex structure, or after being treated by a specific process, it can be used as a dye. Its sulfonic acid group may help its adhesion and dyeing uniformity on the fabric, making the fabric colorful and not easy to fade after dyeing, adding color to the luxurious clothes of dignitaries and nobles, and making folk fabrics more attractive in color.
Second, from the perspective of chemical properties, it contains a variety of amino and carbonyl groups, etc., or can be used for some special chemical reactions. In ancient alchemy or early chemical exploration, or used as a reaction raw material to participate in the exploration of the mystery of substance transformation. Although knowledge was limited at that time, with practical experience, or finding that it can trigger unique reactions, it added to the accumulation of ancient chemical knowledge.
Third, in the field of medical exploration, ancient physicians often searched all things to find a cure for diseases. Although this compound has a complex structure, there were also cases of complex natural substances being used as medicine in ancient times. Or after trying, it was found to have specific curative effects on certain diseases, or in the process of drug processing, it was used as an auxiliary substance to affect the performance of drugs, contributing to the development of traditional medicine.

(3E) -5- (acetamido) -3- {[4- (acetamido) phenyl] hydrazone} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid This substance is a class of organic compounds. Its physical properties are quite important and are related to many practical applications.
First of all, its appearance is often solid, its appearance is microscopic, or crystalline, and its color may be between white and light yellow. The characterization of this color is related to the chromophores in the molecular structure. The conjugated system and nitrogen-containing and oxygen-containing functional groups in the molecule cause it to exhibit such color during the process of light absorption and reflection.
talks about solubility. This substance has a certain solubility in polar solvents, such as water. This is due to the presence of sulfonic acid groups in the molecule, which are strong polar groups and can form hydrogen bonds with water molecules, so it can be partially dissolved in water. However, in non-polar solvents, such as alkane solvents, the solubility is extremely low. Because of its strong overall polarity, the force between the molecule and the non-polar solvent is weak.
Its melting point is also a key physical property. The melting point has been experimentally determined to be in a specific temperature range. The existence of the melting point originates from the maintenance of intermolecular forces within the crystal structure. When the temperature rises to the melting point, the molecule obtains enough energy to overcome the intermolecular forces, the crystal structure disintegrates, and the substance changes from solid to liquid.
Looking at its density, due to the type of atoms in the molecular structure and the degree of close arrangement, it has a specific density value. This density characteristic has a significant impact on many processes involving the separation and mixing of substances.
(3E) -5- (acetylamino) -3- {[4- (acetylamino) phenyl] hydrazone} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid The physical properties, such as appearance, solubility, melting point, density, etc., are determined by the molecular structure and play an important role in applications in many fields such as chemicals and materials.

(3E) - 5- (acetamido) - 3- {[4- (acetamido) phenyl] hydrazinido} - 4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid? The preparation of this compound requires certain steps and techniques.
First, the selection of raw materials is crucial. Naphthalene compounds with corresponding substituents should be selected as starting materials, such as those containing groups that can derive acetamido and sulfonic acid groups. This naphthalene compound needs to have a high purity to ensure the smooth progress of the reaction.
Second, the introduction of acetamide group. Under suitable reaction conditions, such as acetyl chloride or acetic anhydride, under suitable reaction conditions, such as in a specific solvent, an appropriate amount of catalyst is added to control the temperature and reaction time, so that the naphthalene compound reacts with the acetylation agent, so that the acetamide group is successfully introduced at the target position.
Furthermore, the structure of the hydrazine group is constructed. A suitable hydrazine compound needs to be selected for condensation reaction with the acetylated naphthalene derivative. This reaction also requires precise regulation of the reaction conditions, such as the polarity of the solvent, pH, temperature and reaction time, etc., in order to promote the effective combination of the two to form the desired {[4- (acetylamino) phenyl] hydrazinido} structure.
Then, the introduction of sulfonic acid groups. Sulfonation reagents, such as concentrated sulfuric acid or fuming sulfuric acid, can be used to sulfonate specific positions on the naphthalene ring under appropriate reaction conditions, and then successfully introduce disulfonic acid groups. This step requires strict control of the reaction temperature and reagent dosage to prevent excessive sulfonation or other side reactions.
During the whole preparation process, after each step of the reaction, suitable separation and purification methods, such as column chromatography, recrystallization, etc., are required to obtain high-purity intermediate products and final target products. In this way, (3E) -5- (acetylamino) -3- {[4- (acetylamino) phenyl] hydrazidinyl} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid can be prepared with ideal yield and purity.

(3E) -5- (acetamido) -3- {[4- (acetamido) phenyl] hydrazine fork} -4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid This substance, common specifications in the city, are as follows.
Looking at past classics, in the records of chemical materials, the specifications of this substance often vary according to the use and preparation process.
One of the common ones is high-purity crystalline form. Such specifications are mostly used in fine chemical synthesis. If you want to make high-end dyes or pharmaceutical intermediates, you need to have extremely high purity and almost no impurities in order to meet the reaction requirements and produce high-quality products. Its crystal morphology is regular, and the particle size also has a specific range, which may be conducive to subsequent processing operations.
Second, it is a solution specification of a specific concentration. In many industrial production processes, it is directly put into use in the form of a solution, which can save the trouble of dissolution and preparation. The concentration of this solution is precisely controlled, or X%, or other specific values, and it is precisely prepared according to the needs of downstream applications to ensure the stability and uniformity of the reaction process.
Third, there are also those that exist in the form of mixed materials. Blend with other auxiliaries, additives, etc., to give the product specific properties. If blended with dispersants, it can optimize its dispersion performance in a specific medium; when combined with stabilizers, it can enhance its chemical stability and maintain good performance in different environments.
These common specifications are all born to meet the needs of all parties. In the field of chemical industry, each can be used to promote the prosperity of the industry.