3,4-Diethoxybenzaldehyde (9Ci) is a kind of organic compound. In its chemical structure, the benzene ring is a group, and at the 3rd and 4th positions of the benzene ring, each is connected to an ethoxy group (-OCH ² CH 🥰), and the aldehyde group (-CHO) is also connected to the benzene ring.
The structure of this compound, the benzene ring is aromatic, and six carbon atoms are connected by conjugated double bonds to form a ring. In the ethoxy group, the oxygen atom is connected to the benzene ring carbon by a single bond, and the ethyl group (-CH ² CH 🥰) is connected to the oxygen. In the aldehyde group, the carbon atom is connected by a double bond to oxygen, and a single bond to hydrogen, which is also connected to the benzene ring carbon.
Looking at its structure, the lone pair of electrons of the oxygen atom of the ethoxyl gene can have an electronic effect with the benzene ring, affecting the electron cloud density of the benzene ring, and then have an effect on the reactivity, physical and chemical properties of the compound. The aldehyde group imparts specific chemical activity to the compound and can participate in many organic reactions, such as nucleophilic addition reactions. The characteristics of this structure make it widely used in the field of organic synthesis and can be used as a key intermediate for the preparation of various drugs, fragrances and other fine chemicals.

3,4-Diethoxybenzaldehyde (9Ci) is an organic compound. Its physical properties are numerous.
First of all, its appearance, under room temperature and pressure, is often colorless to light yellow liquid, and it has a certain degree of transparency. When it is pure, there is no mixture of impurities. Its smell has a special aroma. Although it is not strong and pungent, it also has a unique taste. It can be felt in organic synthesis sites or related products.
When it comes to the melting point, the melting point is very low, and it is not a solid state at room temperature. The boiling point varies according to the ambient pressure. Usually under specific pressure conditions, it has a relatively fixed boiling point value. This is the key temperature of its gasification transformation. It is an important reference data in chemical operations such as separation and purification.
Furthermore, its solubility is also an important quality. In organic solvents, such as ethanol, ether, etc., it has good solubility and can be miscible with such solvents to form a uniform mixed system. However, in water, the solubility is very small. Due to the small proportion of hydrophilic groups in the molecular structure, the hydrophobic phenyl ring structure and ethoxy group are dominant, making it difficult to dissolve in water.
Its density is slightly larger than that of water. If mixed with water, it can be observed that it sinks underwater. And because it is a liquid with good fluidity, it can operate smoothly during pipeline transportation, reactor circulation, etc. However, it is also necessary to pay attention to its volatility. Although it is not highly volatile, some molecules still escape into the gas phase under appropriate temperature and ventilation conditions.

3% 2C4 -diethylbenzaldehyde oxime (9Ci) is mainly used in the field of organic synthesis. Among many reactions in organic synthesis, it can participate in the reaction as a key intermediate. This is due to its unique chemical structure, including aldoxime groups and diethylbenzene substituents, which endows it with special reactivity and selectivity.
For example, when building complex organic molecular structures, aldoxime groups can introduce other functional groups through specific chemical reactions, such as addition reactions with nucleophiles, to gradually build the skeleton of the target molecule. The presence of diethylbenzene substituents will affect the spatial structure of the molecule and the distribution of electron clouds, which in turn affects the process of the reaction and the configuration of the product.
In some drug synthesis routes, 3% 2C4-diethylbenzaldehyde oxime (9Ci) may also play an important role. The design of drug molecules often requires the precise construction of specific chemical structures to achieve specific pharmacological activities. It can be used as a starting material or an intermediate conversion substance through a series of organic reactions to eventually synthesize drug molecules with specific therapeutic effects. Its special structure helps to precisely control the reaction check point and the stereochemistry of the product during the synthesis process, meeting the strict requirements for molecular structure accuracy in drug development.
In the field of materials science, it may also play a role. For example, when preparing some organic materials with special properties, the reactions they participate in can endow the materials with unique physical and chemical properties, such as improving the optical properties, electrical properties or thermal stability of the materials. By making rational use of their chemical properties, functional organic materials that meet specific needs can be designed and synthesized to meet the diverse requirements for material properties in different fields.

3,4-Diethoxybenzaldehyde (9Ci) is an important intermediate commonly used in organic synthesis. There are about several methods for its preparation.
One is the method of using resorcinol as the starting material. The resorcinol is first combined with chloroethane in an alkaline environment, catalyzed by an appropriate catalyst, and alkylated to obtain 3,4-diethoxyphenol. Then, the product is oxidized with a suitable oxidant, such as a mixed system of manganese dioxide and sulfuric acid, or a mild Dess-Martin oxidant, etc. The phenolic hydroxyl group can be oxidized to the aldehyde group, and then 3,4-diethoxybenzaldehyde can be obtained. In this process, the alkylation step needs to control the reaction conditions, such as temperature, amount of base and catalyst activity, to ensure that the position and amount of ethoxy groups introduced are accurate; the oxidation step also needs to pay attention to the amount of oxidizing agent and the reaction process, in order to prevent the risk of excessive oxidation.
The second is the way to start with vanillin. Vanillin is methylated to protect the methoxy group, and then a suitable reducing agent, such as sodium borohydride-boron trifluoride ethyl ether complex, reduces the aldehyde group to an alcohol hydroxyl group to obtain the corresponding alcohol. Then the alcohol reacts with halogenated ethane in the presence of a base to introduce ethoxy groups. Finally, the target product can be obtained by reoxidizing the alcohol hydroxyl group to the aldehyde group with a selective oxidant, such as active manganese dioxide. This process requires fine control of the reaction conditions at each step. The completeness of methylation, the selectivity of reduction and alkylation are all related to the purity and yield of the final product.
Third, benzaldehyde can be started. Benzaldehyde is first brominated, and bromine atoms are introduced at the 3,4 positions of the benzene ring to obtain 3,4-dibromobenzaldehyde. Subsequently, it is heated with sodium ethanol in an ethanol solvent, and the bromine atoms are replaced by ethoxy groups, resulting in 3,4-diethoxylbenzaldehyde. In this route, the localization selectivity of the bromination reaction and the optimization of the conditions of the nucleophilic substitution reaction, such as temperature, reaction time and concentration of sodium ethanol, are all key factors, which are related to the smooth progress of the reaction and the quality of the product.

3% 2C4-diacetylbenzoic acid (9Ci) is a chemical substance. In the process of storage, there are many things that should be paid attention to.
When it is stored, it is the first time to dry in the environment. This chemical substance is prone to moisture and affects its properties, so it is stored in the dry environment, and the dense container is used to prevent moisture intrusion. If it is stored in the place of moisture, it may cause its hydrolysis and other reactions, which will reduce the quality of the substance and affect its use.
Secondly, the quality is also low. It is appropriate to store it in the place where it is stored and avoid high temperatures. Due to high temperature or the decomposition of the substance, it may even cause dangerous reactions. Generally speaking, it is better to keep it in normal or slightly lower conditions.
In addition, there are no dangerous substances such as ignition and oxidation. This chemical substance may be flammable, in case of open flame, high temperature flammable, and oxidation may also cause severe reactions, endangering safety.
In this case, the packaging must be firm. Appropriate packaging materials are required to withstand certain shocks and collisions to prevent leakage due to container rupture. If the leakage is in the environment, it will not cause pollution, and may also endanger the health of people around it.
In addition, people are familiar with the characteristics and emergency treatment methods of this material. In the event of an accident such as leakage, measures can be taken quickly and appropriately, such as evacuating crowds, sealing, cleaning up leakage, etc., to reduce hazards. And it is necessary to abide by the relevant laws and regulations, and follow the designated roads and routes to ensure safety.