3-Pyridinecarboxaldehyde, 6-methoxy-

For 3-aminoacetonitrile, the chemical properties of 6-amino-ethanol are particularly important. Both contain nitrogen elements, but their structures are different, and their properties are also different.
Let's talk about 3-aminoacetonitrile first, which has a nitrile group and an amino group. Nitrile groups have high chemical activity and can undergo hydrolysis. In acidic or alkaline environments, nitrile groups can be hydrolyzed to carboxylic groups. If catalyzed by acids, they can form amides and then carboxylic acids; if catalyzed by bases, amide intermediates can form quickly and eventually form carboxylic acids. And amino groups are basic and can react with acids, such as hydrochloric acid, to form corresponding ammonium salts. And because of its nucleophilicity, it can react with electrophilic reagents such as halogenated hydrocarbons by nucleophilic substitution, which is an important path for building carbon-nitrogen bonds in organic synthesis.
Say 6-amino-ethanol, which contains amino groups and hydroxyl groups. Hydroxyl groups are nucleophilic and can participate in esterification reactions, co-heat with carboxylic acids or anhydrides to form ester compounds. Amino groups are also basic and can react with acids. It is worth mentioning that due to the presence of both hydroxyl and amino groups in the molecule, intramolecular reactions can occur, such as dehydration and condensation of hydroxyl groups and amino groups under suitable conditions to form cyclic compounds. And it can complex with metal ions, because both amino and hydroxyl groups can be used as coordination atoms, this property has important applications in the separation, purification and catalytic reactions of some metal ions.
In short, 3-aminoacetonitrile and 6-amino-ethanol have their own chemical properties due to structural differences, and are widely used in many fields such as organic synthesis and medicinal chemistry.

3-Aminobutyric acid and 6-aminohexanoic acid are commonly used drugs by doctors and biochemical research. Their preparation and use are well-defined, and they are now commonly used by monarchs.
First of all, 3-aminobutyric acid is an important inhibitory neurotransmitter in the central nervous system. In the field of medical treatment, it can be used to lower blood pressure. It can act on the blood vessel movement center, causing peripheral blood vessels to dilate and lowering blood pressure. And in terms of improving sleep, 3-aminobutyric acid is also quite effective. It can act on the brain, relieve nervous tension, calm the brain nerves, help patients fall asleep, and improve the quality of sleep. In addition, it also has the effect of preventing and treating convulsions in children, stabilizing the excitability of nerve cells and reducing seizures. In the food field, because of its function of improving sleep, it is often added to functional foods for people who want to improve sleep and relieve stress.
The second time is 6-aminocaproic acid, which is an important use for hemostasis. 6-aminocaproic acid can be effective in surgical bleeding, postpartum hemorrhage and other internal and surgical bleeding. Its principle is to inhibit the activator of fibrinolysin, so that fibrinolysin cannot be converted into fibrinolysin, so as to achieve the purpose of hemostasis. It is also used in the adjuvant treatment of blood system diseases such as hemophilia, which can reduce bleeding tendency. In addition, in visceral bleeding conditions such as cerebral hemorrhage and pulmonary hemorrhage, 6-aminocaproic acid is also often used by doctors to help patients stop internal bleeding and stabilize the condition.
In summary, 3-aminocaproic acid is mostly related to neuroregulation, sleep and blood pressure; 6-aminocaproic acid is mainly used for hemostasis-related diseases. Both have their own uses in medicine, food and other fields, and contribute greatly to human health.

To prepare 3-alkylbenzene and 6-amino-alkylbenzene, the method is as follows:
For the preparation of 3-alkylbenzene, the Fu-gram alkylation reaction is often used as the main method. First, benzene is taken as the substrate, and haloalkane is used as the alkylation reagent. Under the catalysis of Lewis acid such as aluminum trichloride, alkyl positive ions are formed in the haloalkane, and then the electrophilic substitution reaction occurs with the benzene ring. If you want to obtain 3-methylbenzene, you can take benzene and chloromethane, and heat the reaction in the catalytic environment of aluminum trichloride. Under the action of aluminum trichloride, the chlorine atom leaves to form a methyl positive ion, which attacks the higher electron cloud density of the benzene ring. After a series of reactions, 3-methylbenzene can be obtained. However, in this reaction, because the alkyl group is the activating group, the product is easy to be further alkylated, resulting in the formation of polyalkylbenzene impurities. Therefore, it is necessary to control the reaction conditions and the proportion of raw materials to increase the yield of the target product.
As for the preparation of 6-amino-alkylbenzene, the alkyl group can be introduced into the benzene ring through the Fu-gram alkylation reaction to obtain alkylbenzene. Then the nitration reaction is carried out. The mixture of concentrated sulfuric acid and concentrated nitric acid is used as the nitrifying reagent. Under heating conditions, the nitro group is introduced into the appropriate position of the alkylbenzene. Because the alkyl group is the ortho-para-position group, the nitro group is mostly introduced into the ortho-and para-position. After separation, the product with the nitro group in the appropriate position is taken. Then the nit If iron and hydrochloric acid are reduced, the nitro group gradually obtains electrons under the action of iron and hydrochloric acid, and finally converts into an amino group through intermediate states such as nitroso and hydroxylamine, so that 6-amino-alkylbenzene can be obtained. During the preparation process, the control of reaction conditions at each step, the separation and purification of the product are all key, which are related to the purity and yield of the final product.

Now I have a question for me, what is the price range of 3-alkyl methyl ether and 6-methoxy group in the market. The price of these two in the commercial market is really difficult to determine. The price of the cover often changes due to various reasons, such as the abundance of materials, the difficulty of production, and the amount of time required.
Let's talk about 3-alkyl methyl ether first. If the preparation method is simple, and the materials used are easy to obtain and cheap, the supply in the market is quite sufficient, and the demand is small, the price may be slightly lower, between tens of dollars and more than a hundred dollars per catty. However, if it is difficult to make, the materials used are rare, and everyone wants it, the price must be high, or more than hundreds of dollars per catty.
As for 6-methoxyl-, the same is true. If the raw materials are common, there is no difficulty in making them, and the number of buyers is limited, the price should be average, or about tens of dollars per catty. If the raw materials are rare, the production methods are complicated, and the market demand is strong, the price may soar, reaching hundreds of dollars per catty, or even higher.
Therefore, if you want to know the price of these two in the market, you must consult all the merchants in the city in person, or visit the industry to obtain a more accurate number, which cannot be generalized.

3-Ethylheptane and 6-amino-heptanol are all organic compounds. Although their storage conditions are not inked in "Tiangong Kaiwu", they can be deduced according to ancient and modern chemical knowledge and common sense.
Let's talk about 3-ethylheptane first, which is an alkane and has flammable properties. In ancient storage, it is advisable to choose a cool and well-ventilated place to avoid fire and heat sources to prevent them from burning due to heat or open flames, which may cause fire. And it needs to be tightly sealed. Because alkanes are volatile, if not properly sealed, not only will the material be lost, but the volatile gas will accumulate in the air, and it will explode when it reaches a certain concentration.
Besides, 6-amino-heptanol, containing amino and hydroxyl groups, is more active in nature. On the one hand, amino groups are alkaline and easy to react with acidic substances, so they need to be stored in isolation from acids to prevent chemical reactions from causing material deterioration. On the other hand, it contains hydroxyl groups and has a certain degree of hygroscopicity. It should be stored in a dry place. If the environment is humid, it is easy to absorb water, or its purity and performance are affected. In addition, 6-amino-heptanol should also be kept away from strong oxidants, as it may react violently with strong oxidants, causing danger.
In short, although the "Tiangong Kaiwu" does not contain these two storage conditions, according to their chemical properties, storage should follow the principles of cool, ventilated, dry, and isolation from contraindications to ensure storage safety and material quality.