4-isothiazolecarboxylic acid, 3-hydroxy-5-mercapto-, sodium salt (1:3)

"Tiangong Kaiwu" has a saying: "Where nitrate is produced in China, it is specially produced in the northwest. Its quality changes with the soil, whether it is yellow or white, or red or black, it is bitter." This nitrate is fire nitrate, that is, potassium nitrate, which is different from what Jun said about mirabilite (sodium sulfate), salt nitrate (also another name for sodium sulfate), heteropolite (zinc silicate), etc.
Saltpeter has a wide range of uses. In the military, it is a key ingredient of gunpowder. In ancient wars, gunpowder has extraordinary power. Saltpeter, sulfur and charcoal are mixed into gunpowder in a specific ratio, which can be used as gunpowder for firearms. It can make firearms explode and erupt, kill the enemy far away, siege the city and pull the fortress, and show its power.
In metallurgy, saltpeter is also very useful. It can be used as a flux to reduce the melting point of ore, making it easier for metals to be separated and extracted from ore, and improving the efficiency and purity of metallurgy. It is indispensable for the smelting of metals such as copper and iron.
Furthermore, in the field of medicine, saltpeter also occupies a place. It has the effects of diarrhea, diuretic and breaking, and can treat all kinds of diseases. However, it needs to be used with caution and must follow medical principles to achieve the effect of treating diseases and saving people and avoiding injuries.
In addition, in the tanning industry, saltpeter can be used for hair removal and tanning of leather, making leather soft and durable, with better color and luster. The leather goods made are of high quality and have a wide range of uses.
Saltpeter plays an important role in many industries, reflecting the wisdom of the ancients and promoting the development and progress of society.

The saltpeter, the mirabilite, and the turmeric sand each have specific physical properties.
The saltpeter is white and brittle in color, often in the shape of granules, and is cold in nature. Its taste is extremely bitter and salty. When placed on fire, the flame is purple, which is a significant sign of it. When dissolved in water, it absorbs heat and causes the water temperature to drop, just like a cold feeling.
The glauberite is white and moist in color, like a crystal, slightly softer than saltpeter. Its taste is salty and bitter, easily soluble in water. When dissolved, it also appears to absorb heat, but it is slower than saltpeter. When exposed to the air, over time, it is easy to weathering, gradually losing crystalline water, and forming a powder state.
The color of the sand may be white or yellowish, and it is more brittle, salty and refreshing. It has the property of deliquescence. In a humid environment, it is easy to absorb water vapor and deliquescence. When heated, the sand easily sublimates, turns into a gaseous state and then re-condenses into a solid state, which is different from the characteristics of saltpeter and mirabilite.
Although all three are minerals, their physical properties are different, or they are different from the reaction of fire, or the dissolution of water, or the change of air. It is the wonder of nature's creation.

Saltpeter, sulfur, and charcoal are the main components of gunpowder. Among them, saltpeter is the king's medicine, sulfur is the minister's medicine, and charcoal is the adjuvant medicine.
First of all, saltpeter is cold in nature, salty in taste, bitter in taste, and has the ability to attack and break down, dilute water, detoxify and reduce swelling. In gunpowder, saltpeter is heated to decompose oxygen, providing a large amount of combustion-supporting gas for combustion, which is the key factor for gunpowder to burn violently and explode.
Second, sulfur is warm in nature, sour in taste and poisonous. In gunpowder, on the one hand, it can reduce the ignition point of gunpowder and make gunpowder easier to ignite; on the other hand, when burning, it can produce gases such as sulfur dioxide, increase the amount of gas generated, and enhance the power of explosion.
Besides, charcoal is light and loose. In gunpowder, it acts as a flammable agent, chemically reacts with saltpeter and sulfur, releasing a large amount of heat energy, and its loose structure is conducive to the full contact of oxygen with other components, promoting the rapid progress of the reaction.
These three ingredients cooperate with each other, saltpeter provides oxygen to support combustion, sulfur adjusts ignition and increases power, and charcoal provides energy as a flammable substance. The three complement each other and together create the characteristics of gunpowder that explodes when it encounters fire. It has extraordinary uses in military, civilian and many other fields, or is used for war attacks, or for opening mountains and breaking ground. It is an important invention that changes the world.

To prepare 3-quinyl-5-heptyl-4-isopentenyl quinoline triazinone, you can do it as follows.
First take an appropriate amount of quinyl derivatives and place them in a clean reactor. Nitrogen should be replaced with air in the kettle to create an inert atmosphere and prevent side reactions from happening. Then add an appropriate amount of heptylated reagent, which needs to be purified to ensure purity and prevent impurities from disturbing the reaction process. At the same time add an appropriate amount of catalyst. The choice of this catalyst is related to the reaction rate and yield, and it should be done with caution. Control the reaction temperature to a suitable range, often in an oil bath or a water bath to control the temperature, so that the temperature is constant, about [X] ° C, and stir at a constant speed with a stirrer, so that the reactants are fully mixed and the reaction is uniform. After several hours of reaction, the reaction process is monitored by thin-layer chromatography. When the raw material point almost disappears, the reaction is almost complete.
Then, pour the reaction solution into an appropriate amount of ice water to quench the reaction. Then extract the product with an organic solvent. The choice of organic solvent needs to be immiscible with water and have good solubility to the product, such as dichloromethane, ethyl acetate, etc. Separate the liquid, take the organic phase, dry it with anhydrous sodium sulfate, and remove the water. Then steam the organic solvent with a rotary evaporator to obtain a crude product.
The crude product needs to be purified by column chromatography. Select a suitable silica gel column and elute with a specific ratio of eluent, such as petroleum ether and ethyl acetate in the ratio of [X]. Collect the eluent containing the target product and steam off the solvent to obtain a relatively pure 3-quinyl-5-heptyl-4-isopentenyl quinoline triazinone product. Careful attention should be paid to the control of reaction conditions and the quantity and quality of reagents in each step to achieve the expected yield and purity.

There are many matters that cannot be ignored when using the three-edged genus of fumarite, kao sand, and heterogeneous salt.
Alumarite has a strong nature, and its amount should be reviewed when used. If the dosage is too large, it is easy to change. When it is processed, the heat is particularly critical. If the fire is too much, the alumarite will change and lose its effectiveness; if the fire is not enough, the medicinal power will not be complete, and it will be difficult to achieve its expected effect. And alumarite has the property of convergence. If used improperly, it may cause stagnation of qi in the body and various diseases.

Alumarite has a salty and bitter taste, is hot and toxic. When using this medicine, you must first clarify the evidence of its application. Unless there is indeed a cold accumulation disease, it should not be used lightly. And its poison is strong, and the dosage control must be precise and precise. A slight mistake, or the danger of poisoning, injury to the viscera, and harm to life. The ancient method must be followed to prepare the turmeric sand, in order to reduce its toxicity and increase its curative effect.
The three edges of the salt also have their own characteristics. The three edges break the blood and circulate qi, although it is a good medicine to remove evil, it is fierce. Those who use it should carefully examine the rise and fall of the patient's qi and blood. If the person with qi and blood deficiency should use it with caution, and they should be afraid of cutting the righteous qi, so that the person with the deficiency will be more empty. And the salt of the different soldiers, in the preparation of formulas, also needs to be properly matched with other medicines, in order to complement each other and avoid the danger of opposing each other.
All these medicines should not be neglected when stored. Choose a dry and cool place to prevent them from getting damp and deteriorating and losing their efficacy. Users must be familiar with pharmacology and consider carefully to achieve the purpose of curing diseases and avoid accidental harm.