The main uses of 3,5-diethoxybenzoic acid are as follows:
This substance is quite useful in the field of medicine. Because it has a specific chemical structure and properties, it can be used as a key intermediate for the synthesis of a variety of drugs. In the process of drug development, its structure can be modified and transformed to endow the synthesized drug with specific physiological activities, such as antibacterial, anti-inflammatory, and anti-tumor effects. For example, by incorporating it into the molecular structure of the drug through a specific chemical reaction, it may enhance the affinity and specificity of the drug to a specific target, thereby improving the efficacy of the drug and reducing adverse reactions.
It is also of great value in the field of materials science. It can be used to prepare functional polymer materials. Using it as a raw material, through polymerization, its characteristics can be introduced into the polymer chain segment, giving the polymer material unique properties, such as improving material solubility, thermal stability and biocompatibility. Such functional polymer materials are widely used in coatings, adhesives, biomedical materials, etc. For example, in the field of biomedical materials, with good biocompatibility, the prepared polymer materials may be used in tissue engineering scaffolds, drug sustained-release carriers, etc., to help human tissue repair and disease treatment.
In the field of organic synthesis, 3,5-diethoxybenzoic acid is an extremely important building block for organic synthesis. Because of its carboxyl and ethoxy groups, it can participate in many classic organic reactions, such as esterification, amidation, and nucleophilic substitution. Through these reactions, organic compounds with diverse structures and more complex structures can be constructed, providing a rich material foundation and diverse synthesis paths for the development of organic synthetic chemistry, and promoting organic synthetic chemistry to new heights.

3,5-Diethoxybenzaldehyde is an organic compound with special physical properties. Its properties are colorless to light yellow liquid or crystalline solid, which exists stably at room temperature and pressure.
Looking at its appearance, when pure, it is colorless and transparent to light yellow liquid. If the temperature is reduced or treated, it will crystallize into a solid, and the texture is delicate. The color varies slightly according to the purity and storage conditions.
Smell its smell and emit a fragrant smell. This unique fragrance is widely used in the field of fragrances and essences, which can give the product a special fragrance.
Measure its melting point, which is in the range of about 28-32 ° C. At this temperature, the solid state will transform to the liquid state. This property is of great significance to its application in specific processes. According to the melting point characteristic, at close to this temperature, it can be melted and used in synthesis, preparation and other processes.
Measure its boiling point, which is between about 281-284 ° C, indicating that a higher temperature is required to transform it from liquid to gas. This property is crucial in chemical operations such as distillation and separation. It can be effectively separated from the mixture by the difference in boiling point.
In terms of its solubility, slightly soluble in water, because water is a polar molecule, while 3,5-diethoxy benzaldehyde has a weaker polarity. According to the principle of "similar miscibility", the two have poor miscibility. However, it is easily soluble in organic solvents such as ethanol, ether, and chloroform. The polarity of these organic solvents is similar to that of 3,5-diethoxy benzaldehyde, which can be well dissolved, providing convenience for its organic synthesis, extraction, and other operations.
Its density is about 1.056-1.066 g/cm ³, which is slightly higher than that of water. When it comes to liquid-liquid separation or mixing system operations, effective separation or uniform mixing can be achieved according to the density difference.

The chemical properties of 3,5-diethoxybenzoic acid are quite stable. This substance contains the structure of diethoxy and benzoic acid, which gives it a specific chemical behavior.
In terms of thermal stability, under normal conditions, its structure is not easy to be cracked by heat. The benzene ring has a conjugated system, which imparts high stability to the molecule; and the ethoxy group is connected to the benzene ring, and the overall structure is more stable through electronic effect. Even if heated, to cause its chemical bonds to break requires a higher temperature, which cannot be easily achieved in general environments.
It also shows certain stability to common chemical reagents. In neutral or weakly acidic and weakly basic environments, 3,5-diethoxybenzoic acid can maintain its structure unchanged. This is due to the chemical inertness of the benzene ring and ethoxy group. Under such mild conditions, it is difficult to react violently with common reagents.
When encountering strong oxidizing agents or extreme chemical environments such as strong acids and strong bases, the stability may change. Strong oxidizing agents such as the mixture of concentrated sulfuric acid and concentrated nitric acid may attack the benzene ring, causing it to oxidize and change the structure. Strong bases under high temperature and high pressure may cause hydrolysis of ethoxy groups and damage the molecular structure.
Overall, under general experimental conditions and common environments, 3,5-diethoxy benzoic acid is chemically stable. However, when encountering extreme chemical conditions, its stability needs to be re-considered.

There are various ways to synthesize 3,2,5-diethoxy benzaldehyde. One method is to use benzaldehyde as the base, halogenate to obtain halogenated benzaldehyde, and then heat it with the alcohol solution of sodium ethanol to perform nucleophilic substitution, and then form 3,2,5-diethoxy benzaldehyde. The mechanism of the reaction is that the halogen atom is affected by the electronic effect of the benzene ring, and the activity is quite good. The ethoxy negative ion of sodium ethanol has strong nucleophilicity. The two phases act, the halogen atom leaves, and the ethoxy group replaces it.
There are those who start with resorcinol. First, resorcinol and haloethane were reacted in an alkaline environment with the help of a phase transfer catalyst to perform etherification reaction to obtain m-diethoxybenzene. Then, by formylation, such as Vilsmeier-Haack reaction, phosphorus oxychloride and N, N-dimethylformamide were used together as formylation reagents, and m-diethoxybenzaldehyde was reacted with m-diethoxybenzaldehyde to obtain 3,2,5-diethoxybenzaldehyde. In this reaction, phosphorus oxychloride interacts with N, N-dimethylformamide to form an active formylated intermediate, attacking the benzene ring, and introducing formyl groups.
Furthermore, 3,5-dihydroxybenzaldehyde can be used. The hydroxyl group is first protected with an appropriate protective group, such as acetyl group, and then reacted with haloethane to introduce ethoxy group. After the ethoxy group is introduced, the protective group is removed to obtain the target product 3,2,5-diethoxybenzaldehyde. In this process, the choice of protective group needs to be considered that it is easy to introduce and remove, and can exist stably during the reaction process without affecting other reaction steps.
All synthesis methods have advantages and disadvantages. With benzaldehyde as the starting material, the raw material is easy to obtain, but the steps are slightly more complicated; the resorcinol method as the starting material, the route is more direct, and the formylation step conditions may need to be fine-tuned; the 3,5-dihydroxybenzaldehyde method, the protective group operation increases the steps, but the selectivity of the reaction can be improved. In practical application, when the availability of raw materials, cost, yield and purity requirements, carefully choose the appropriate synthesis path.

The market price of 3,5-divinylbenzene varies depending on quality, supply and demand, and market conditions. Generally speaking, its price is in the range of tens to hundreds of yuan per kilogram. If the quality is excellent, the supply is less than the demand, and the market conditions are tight, the price may rise, reaching hundreds of yuan per kilogram. On the contrary, if the quality is average, the supply exceeds the demand, and the price may drop to tens of yuan per kilogram.
However, the market situation is fickle, and the price fluctuates accordingly. To know the exact price, you should consult chemical raw material suppliers, traders, or check the real-time market conditions of chemical product trading platforms. When purchasing this product, it is also necessary to carefully review the quality, supplier reputation and after-sales service, and weigh all factors to obtain an affordable and high-quality 3,5-divinylbenzene.