4H-Pyrano(3,2-g)quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-, disodium salt

This is the disodium salt of 4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-. According to its naming, its chemical structure can be inferred. This compound uses 4H-pyrano (3,2-g) quinoline as its parent nucleus, with ethyl at position 9, propyl at position 10, and monocarboxyl at positions 2 and 8. Because it is a disodium salt, it can be seen that the hydrogen on the carboxyl group is replaced by sodium. The "dioxo" at positions 6 and 4 indicates that the two are carbonyl structures. 6,9-Dihydro means that the double bonds of the 6 and 9 positions are hydrogenated. With this name, the disassembly can roughly outline its chemical structure, but the exact details may need to be confirmed by professional map analysis.

This is 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-4H-pyrano (3,2-g) quinoline-2,8-diformate disodium salt. The physical properties of this substance are described in detail as follows:
Its appearance is often powder or crystalline, and its color is white and pure. Viewed under a microscope, the crystalline morphology is regular and orderly, which shows the rigorous structure of its structure. The powder is delicate in texture and smooth to the touch, just like fine sand passing through the fingers, showing the delicate microstructure. < Br >
In terms of solubility, it is soluble in water, just like snowflakes merging into a stream, quietly disappearing without leaving a trace, forming a uniform and stable solution. This property is due to the interaction between its molecular structure and water molecules, and the two are in perfect harmony, so they can be freely dispersed in water. In common organic solvents, such as ethanol and acetone, the solubility is low. If oil floats in water, it is difficult to melt. This difference reflects the weak force between its molecules and organic solvent molecules.
Determination of melting point is the key to understanding its thermal stability. When the temperature gradually rises to a certain value, the substance begins to melt from solid to liquid, which is the melting point. The melting point of this substance is quite high, indicating that its intermolecular force is strong, and it requires high energy to break the lattice structure and realize the phase transformation. It is like a strong fortress and requires strong external force to overcome.
In terms of stability, in a dry and clean environment at room temperature and pressure, its properties are stable, just like a calm old man, and it has not changed over time. When encountering strong acids and alkalis, it is like a scholar and a bandit, and the structure is easily damaged, and chemical reactions occur, resulting in changes in properties.
Density is also one of its important physical properties. Through precise measurement, it can be seen that its density is moderate, neither as light as a feather nor as heavy as lead. This property is closely related to the molecular arrangement, and the moderate density gives it specific behavior and performance in various systems.
The above physical properties are of great significance in many fields such as chemical industry and medicine. Only by accurately grasping these properties can we provide a solid and reliable basis for relevant research and production, so that it can play a unique and important role in various fields.

4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl -, disodium salt, the main use of this substance is quite extensive. In the field of medicine, it may be used as a key component of new drugs. Due to its unique chemical structure, it may have specific biological activities, can interact with human biomolecules, or can be used to develop drugs for the treatment of specific diseases, such as certain inflammation-related diseases, tumor diseases, etc., through its special structure to affect diseased cells, to achieve therapeutic purposes. < Br >
In the field of materials science, the unique structure of this compound may endow it with special optical, electrical or thermal properties. It can be used as a building block of functional materials for the preparation of organic materials with special properties, such as for optical sensors, which change the optical properties of materials by their response to specific substances or physical quantities, and realize the detection of targets; or for the preparation of new organic semiconductor materials, which are used in the field of electronic devices.
At the level of scientific research and exploration, it can be used as an important chemical tool to help scientists deeply explore basic scientific issues such as the mechanism of chemical reactions and the principle of intermolecular interactions. Due to its complex and unique structure, it can provide unique samples and ideas for the research of organic synthetic chemistry, medicinal chemistry and other disciplines, and promote the development of related disciplines' theories and technologies.

The synthesis method of 4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-disodium salt, although it is not detailed in "Tiangong Kaiwu", it can be deduced according to the principles of ancient chemistry.
To make this substance, it is necessary to find its basic raw materials first. When starting with a quinoline derivative with a suitable substituent, if quinoline with a modifiable check point is selected, its structure should be improved. Halogenation can be used to introduce halogen atoms at specific positions, which adds an activity check point to the reaction. If a halogenated reagent is used, under the appropriate temperature and solvent environment, the quinoline derivative is halogenated to precisely obtain the required halogenated quinoline.
Then, couple it with a reagent containing a pyran ring structure. In this step, a suitable catalyst needs to be selected to promote the bonding of the two, such as a metal-catalyzed coupling reaction. In combination with a specific metal salt and ligand, in an inert gas protective atmosphere and temperature control, the pyran ring is connected to the quinoline structure to obtain the basic structure of pyranoquinoline.
Furthermore, the carboxyl and carbonyl groups on the target are constructed. The dicarboxylic acid moiety is added by carboxylation reaction. Carbon dioxide can be used as the carboxyl source, and organometallic reagents can be used to guide the carboxyl group to the designated position. For carbonyl groups, it can be constructed by oxidation or specific condensation reactions, such as oxidation of alcohols or condensation of aldones and ketones.
As for 9-ethyl and 10-propyl substituents, they can be introduced by alkylation reaction. With the corresponding halogenated alkanes, under basic conditions and the help of suitable catalysts, ethyl and propyl can be connected to the predetermined position.
When the main structure is complete, the step of salt formation is also critical. With alkali solutions such as sodium hydroxide, it can react moderately with products containing carboxyl groups to precisely regulate the pH value to generate disodium salts. During the process, the temperature and concentration must be precisely controlled to obtain pure 4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-disodium salt products.

4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl -, disodium salt. When using this product, many matters need to be paid attention to.
The first thing to pay attention to is safety. The nature of this compound may be potentially harmful. When exposed, be sure to strictly follow safety procedures. If handling this product, wear appropriate protective equipment, such as gloves, goggles and protective clothing, to prevent it from touching the skin, eyes, and avoid inhalation. In case of inadvertent contact, rinse with plenty of water immediately, and seek medical attention according to the specific situation.
Secondly, the method of storage is also the key. When placed in a cool, dry and well-ventilated place, away from fire and heat sources, to prevent deterioration or cause danger. And must be placed separately from other chemicals to avoid improper chemical reactions.
Furthermore, when using, accurate measurement and operation steps must not be sparse. According to the needs of experiment or production, strictly measure the required amount without deviation. During operation, strictly follow the established process and cannot be changed at will to ensure the accuracy of the result and the safety of the process.
In addition, the impact of this substance on the environment also needs to be considered. After use, the disposal of its waste must follow environmental protection requirements and should not be discarded at will to prevent pollution to the environment.
In short, when using this 4H-pyrano (3,2-g) quinoline-2,8-dicarboxylic acid, 9-ethyl-6,9-dihydro-4,6-dioxo-10-propyl-disodium salt, safety, storage, operation and environmental protection must be treated with caution, and there must be no slack.