2-thiophenecarboxaldehyde, 3-fluoro-

"Tiangong Kaiwu" records that in Jiang-2-razor field (presumably what you want to say is related to razor field, because the expression is not clear to make this speculation), the main uses of constrictor razor are quite extensive.
One is edible. Constrictor razor meat is tender, delicious, rich in protein, vitamins and a variety of trace elements, and rich in nutrients. In terms of cooking methods, it can be steamed, boiled, fried, etc. Steamed constrictor razor can retain its original taste to the greatest extent. When imported, the tender razor razor meat is salty with seawater, which makes people have an endless aftertaste. Fried constrictor razor razor can be matched with onion, ginger, garlic and other seasonings to add a different flavor. It is a favorite food.
Second, it has certain medicinal value. In traditional medical cognition, constrictor razor is sweet, salty and cold. It can be used to treat some diseases such as irritable heat and dysentery, and has the functions of clearing heat and dampness on the human body, providing help for people's health.
Third, constrictor razor also plays an important role in the marine ecosystem. It filters plankton and organic debris in the drinking water, helps to purify seawater, and maintains the stability and balance of the marine ecological environment. It is an indispensable part of the marine ecological chain. In the tidal flat ecosystem of coastal areas, the existence of constrictor razor is of great significance to the maintenance of tidal flat biodiversity, providing a suitable habitat and breeding environment for many marine organisms.

The physical properties of glycerol acetate are as follows:

powder, which is a common carbohydrate in nature, and is distributed in the seeds, roots, etc. of plants. Its outer surface is mostly white powder, which is not soluble in cold water. However, when it encounters raw gelatinization in water, it forms a sticky paste. This property makes it widely used in food processing, such as thickening, coagulation, etc., which can improve the taste of food.
Glycerol acetate, also triacetic acid glyceride, is often a transparent oil solution, and has a faint fruity aroma. It has good solubility, can be mixed with many solubilities, and also has a certain solubility in water. Because glycerol acetate ester is not easy to be fixed, it is often used in fragrance fixation to make the fragrance last longer.
Furthermore, glycerol acetate has certain plasticizing properties. In the processing of some polymer materials, the addition of glycerol acetate can improve the flexibility and plasticity of the material and improve its processing performance. The addition of glycerol acetate-based modified powder can improve the new characteristics of the powder. For example, it can improve the hydrophobicity of the powder, making it better in some special environments. It may also affect the gelatinization degree and viscosity of the powder, and expand the use of the powder. It shows its value in the fields of materials, biodegradable materials, etc. Therefore, each of the two has its own characteristics, and the principles of the two can be combined with each other, which can generate more beneficial physical reasons to meet the needs of different teams.

By the rim of the water, the asparagus is cunning and good at hiding. Its color often changes with the situation, or it is hidden among the grass and lush, blending with the emerald color; or it lies on the dead wood, which is the same as brown and yellow. This is a wonderful way to defend against enemies and traps.
Its body is vigorous, although its body is not as good as a ruler, it moves like a gust of wind. On the occasion of the forest spring, it is free to shuttle, and when encountering small beasts and insects, it is often attacked by Xunlei. The mouth contains a slight poison, although it is not fatal to large things, but those in it also feel numbness, swelling and pain, and then lose the power to resist, so they can feed.
The nature of the cobra is to enjoy the secluded and moist places of the tide, and the undergrowth of the forest and the grass in the caves next to the Fanxi River are all its dwellings. Fear strong light and like shade, day and night come out, take advantage of the quiet of the night, and hunt and forage.
When it reproduces, the female cobra chooses a secret place, digs shallow holes and lays eggs in it, covering it with soil and gravel, and carefully protecting it. The eggs come out of the shell over time, and the young cobs are small and weak at first. As they grow, they learn all kinds of survival skills, inheriting the cunning and agile nature of their species. Between the mountains and rivers, they are alone, and after years, they exist between heaven and earth.

To make tricyanodiacetonitrile, there are the following methods.
First, start with cyanide and halogenated ethane. Take an appropriate amount of sodium cyanide and dissolve it in an alcohol solvent. This alcohol can be ethanol or propanol to create a homogeneous reaction environment. Then, slowly add halogenated ethane, such as bromoethane or chloroethane. When adding dropwise, the temperature should be controlled in an appropriate range, usually at a low temperature, about 0-10 degrees Celsius, because high temperature is prone to side reactions. After adding dropwise, continue to stir to make the reaction sufficient. In this process, the cyanyl group replaces the halogen atom to form acetonitrile derivatives. Then, with specific reaction conditions, the acetonitrile derivatives are further polymerized to form tricyanodiacetonitrile. Among them, the choice of catalyst is very critical, and alkali metal carbonates or organic bases can be selected to help the reaction proceed efficiently.
Second, nitrile compounds are used as the base. First take acetonitrile and add an appropriate amount of initiator, such as azobisisobutyronitrile. Under suitable temperature and pressure, acetonitrile molecules are acted by initiators to produce active free radicals. This free radical interacts and polymerizes. During the process, an appropriate amount of modifier can be added to control the molecular weight and structure of the polymer. And the purity and environment of the reaction system have a great impact on the product, so it is necessary to ensure that the system is clean and free of impurity interference.
Third, by means of cyclization reaction method. Select compounds containing specific functional groups, such as organics with alkenyl and cyanyl groups. Under suitable reaction conditions and catalysts, cyclization occurs within the molecule. A cyclic intermediate is formed first, and then the intermediate is further converted to produce tricyanodiacetonitrile. This path requires precise control of reaction conditions, such as temperature, catalyst dosage and reaction time, in order to obtain high-purity products.
All kinds of production methods have advantages and disadvantages. In practical application, it should be carefully selected according to the availability of raw materials, cost and product requirements.

First of all, it is necessary to pay attention to the situation.
First of all, the water is not necessary. It is suitable for living in the environment where fresh water is mixed, so the water stored is suitable to the appropriate degree, which is about 25 to 32 percent. If the degree is not low, it is easy to get sick and even die. And the degree of water should not be ignored. At 20 ° C - 27 ° C, the temperature is low, and it is high, and it is low, which endangers life.
Furthermore, the quality of the container is also not allowed to be low. For this reason, it is appropriate to use an open and well-connected container to ensure that there is enough living space, so as not to be caused by it. The pool where the water is stored is cleaned and stained, and regularly scrubbed to prevent the growth of germs.
Oxygen supply is also indispensable. Breathing in the oxygen in the water, when stored in the water, must be oxygenated to maintain sufficient dissolved oxygen in the water, and it will not die due to lack of oxygen.
It is also difficult to breathe, and it should be short. The journey, the exhaustion of energy, coupled with the transformation of the environment, is easy to cause death. Therefore, it is appropriate to be fast and fast, and there are few twists and turns on the way.
In addition, the mixing of oil needs to be carefully considered. Urine is fierce, and it is good to burn, and it should not be mixed with weak aquatic organisms, so as not to harm other things or themselves.
Urine storage, water, containers, oxygen supply, storage, and mixing are all carefully handled to ensure the survival of the product and avoid loss.