What is the use of N-Methyl-N-Nitro-N '-Nitrosoguanidine?
N-Methyl-N-Nitro-N '-Nitrosoguanidine (MNNG), a powerful mutagenic agent, is widely used in the field of scientific research.
MNNG can carefully modify DNA molecules through alkylation, and then precisely induce gene mutations. Its mechanism of action is profound and delicate, and it can introduce alkyl groups into DNA bases, resulting in specific changes in DNA structure and sequence.
In the vast world of microbial genetics research, MNNG is very useful. It can efficiently induce gene mutations in bacteria, fungi and other microorganisms, and help scholars to deeply explore gene functions, metabolic pathways and genetic regulation mechanisms. For example, by mutagenizing specific bacterial strains with MNNG, scholars can precisely screen out mutant strains with special metabolic ability or anti-stress characteristics, which is of great significance for the mining and application of microbial resources.
In the field of tumor research, MNNG also plays a key role. Because it can induce cell gene mutations, it can be used to construct tumor animal models. With the help of MNNG to induce carcinogenesis in cells of experimental animals, scholars can gain in-depth insight into the complex process of tumor occurrence and development, and explore effective strategies and methods for tumor prevention and treatment.
MNNG must be used with extreme caution due to its strong mutagenic activity and potential carcinogenicity. During the experimental operation, researchers must strictly follow safety regulations and take comprehensive protective measures to prevent MNNG from causing harm to themselves and the environment.
What are the physicochemical properties of N-Methyl-N-Nitro-N '-Nitrosoguanidine?
N-methyl-N-nitro-N '-nitrosoguanidine, this material property is special, related to chemistry, and has a deep meaning. It is a white crystal, or slightly yellow, and is stable at room temperature. However, when heated or impacted, it is easy to decompose and release harmful gases, and the risk is known.
In terms of solubility, this substance dissolves slightly in water, but it is soluble in organic solvents such as acetone. This property is considered in chemical preparation and application. Its melting point is about 118 to 122 degrees Celsius, and when heated to this temperature range, a phase change will occur.
In terms of chemical activity, N-methyl-N-nitro-N '-nitrosoguanidine is highly reactive and is a powerful mutagenic agent. In biochemical research, it is often used to induce gene mutation, by interacting with DNA to change the gene structure, so as to study the function and genetic mechanism of genes.
In addition, it is also an important reagent in the field of organic synthesis. It can participate in many chemical reactions to construct complex organic molecular structures. Due to its high reactivity, it is necessary to operate with extreme caution and follow strict procedures to prevent accidents.
In summary, N-methyl-N-nitro-N '-nitrosoguanidine has unique physical and chemical properties. Although it is of great value in scientific research and chemical industry, it must be used with caution to ensure safety due to its potential danger.
What is the preparation method of N-Methyl-N-Nitro-N '-Nitrosoguanidine?
The method of preparing N-methyl-N-nitro-N '-nitrosoguanidine requires specific raw materials and conditions. The method is as follows:
First, take an appropriate amount of N-methyl guanidine and place it in a clean reaction vessel. N-methyl guanidine is the starting material of the reaction, and its purity and dosage have a great influence on the product.
Next, slowly add concentrated nitric acid to it. When adding acid, care should be taken because nitric acid is highly corrosive and oxidizing. In this step, concentrated nitric acid reacts with N-methyl guanidine as a nitrifying agent. The reaction temperature needs to be carefully controlled, generally controlled in the low temperature range, to prevent the reaction from being too violent and causing more side reactions. Usually, concentrated nitric acid can be slowly added dropwise in an ice-water bath, and stirred while adding, so that the reaction system can be mixed evenly.
After the concentrated nitric acid is added, continue to stir the reaction for a period of time to ensure that the reaction is fully carried out. In this process, N-methylguanidine reacts with nitric acid to gradually form an intermediate product.
Then, add sodium nitrite solution. Sodium nitrite is a nitrosation reagent in this reaction. When adding, also pay attention to the speed and temperature to maintain the stability of the reaction environment. After adding, continue to stir to promote the further completion of the reaction, and finally form N-methyl-N-nitro-N '-nitrosoguanidine After the
reaction is completed, the product is separated and purified. Filtration, washing, recrystallization and other methods can be used to obtain high-purity N-methyl-N-nitro-N '-nitrosoguanidine. When recrystallizing, it is crucial to select a suitable solvent, which needs to be selected according to the solubility characteristics of the product. After multiple recrystallization, the purity of the product meets the requirements.
What are the hazards of N-Methyl-N-Nitro-N '-Nitrosoguanidine to the human body?
N-methyl-N-nitro-N '-nitrosoguanidine, this is a highly toxic substance that is deeply harmful to the human body and must not be ignored.
It has strong mutagenic properties and can cause gene mutations. In experiments, it is often used to induce microbial gene mutations. However, once it invades the human body, it will also change the genes wantonly, greatly increasing the risk of cancer. Long-term exposure or careless ingestion can cause a variety of malignant tumors, such as lung cancer, stomach cancer, liver cancer, etc.
Furthermore, it also damages the human body's immune system. The immune system is the body's defense against foreign enemies. If it is damaged, the human body is vulnerable to bacteria, viruses and other invasions, and various diseases will follow one after another, such as frequent colds, repeated attacks of infectious diseases, etc.
Not only that, N-methyl-N-nitro-N '-nitrosoguanidine also has adverse effects on the reproductive system. It may affect the normal development of reproductive cells and cause reproductive dysfunction. For people of childbearing age, it may cause infertility; if pregnant women are inadvertently exposed, it may affect the normal development of the fetus and cause serious consequences such as fetal malformation.
In short, N-methyl-N-nitro-N '-nitrosoguanidine is widely and seriously harmful to the human body. When using and contacting, it is necessary to strictly follow safety procedures and take protective measures to prevent irreparable damage to your own and others' health.
What to pay attention to when storing and transporting N-Methyl-N-Nitro-N '-Nitrosoguanidine
N-methyl-N-nitro-N '-nitrosoguanidine, this substance is highly toxic and has a strong mutagenic effect. When storing and shipping, you need to pay great attention to the following numbers:
First, the storage place should be cool, dry and well ventilated. This substance is easily decomposed by heat and even causes danger, so it must be kept away from heat and fire sources, and must not be placed in direct sunlight. The temperature should be controlled within a specific range to prevent deterioration.
Second, because it is extremely sensitive to humidity and easily deliquescent, the packaging must be tight. It should be stored in a sealed container, which can be supplemented with a desiccant to ensure a dry internal environment and avoid contact with moisture in the air.
Third, when transporting, it is necessary to follow strict specifications and procedures. Professional transportation tools need to be selected, and transporters should be familiar with their characteristics and emergency treatment methods. The packaging should be firm and reliable to prevent damage and leakage due to collision and vibration during transportation.
Fourth, this substance has strong toxic and mutagenic properties, and the storage and transportation place must strictly restrict the entry and exit of personnel, and strictly prohibit unrelated personnel from approaching. Operators must take protective measures, such as wearing protective clothing, protective gloves and masks, to prevent contact poisoning.
Fifth, it needs to be stored and transported separately from other chemicals, especially oxidizing substances, acids, alkalis, etc., to avoid chemical reactions and cause danger. At the same time, it is necessary to prepare corresponding emergency treatment equipment and materials, and in case of leakage and other accidents, they can be properly disposed of in a timely manner.