CAS:110-86-1
Molecular Formula:C5H5N
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Azabenzene; Azine; Pyridin; Piridina; Pirydyna; Pyridine Crude
Brief Introduction
Pyridine is a six membered heterocyclic compound containing one aza atom, that is, a compound formed by the substitution of one carbon in benzene molecule with nitrogen. It is similar to benzene in that it has the same electronic structure and still has aromaticity. Pyridine and its derivatives are more stable than benzene, and their reactivity is similar to nitrobenzene. Due to the electron absorption of nitrogen atoms in the ring, the electron density at positions 2, 4 and 6 is lower than that at positions 3 and 5. The typical aromatic electrophilic substitution reaction occurs at positions 3 and 5, but the reactivity is lower than that of benzene, so it is generally not easy to nitration, halogenation and sulfonation. In addition, these substitution reactions are carried out in acidic medium. Pyridine forms positively charged ions, which make electrophilic reagents inaccessible. The halogens of 2-or 4-halopyridines are active. Because of the low electron density at positions 2 and 6, nucleophilic substitution reactions can take place at these positions, such as reaction with sodium amino or potassium hydroxide, to give corresponding 2-aminopyridine or 2-hydroxypyridine. Pyridine can also be used as denaturant and dyeing aid in industry, as well as the starting material for synthesis of a series of products, including drugs, disinfectants, dyes, food seasonings, adhesives, explosives and so on. Pyridine is toxic, inhalation, ingestion or skin contact can lead to reduced male fertility, can also cause cancer.
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CAS:130-16-5
Molecular Formula:C9H6ClNO
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5-Chlorooxine; 5-CHQ; 5-Chloroquinolin-8-Ol; 8-Quinolinol, 5-Chloro-; 5-Chloro-8-Quinolinol; 5-Chloroquinophenol; Clioquinol Ep Impurity A; 5-Chloro-8-Oxyquinoline; 5-Chloro-8-Quinolino
Brief Introduction
5-Chloro-8-hydroxyquinoline is an anti-bacterial, anti fungal, anti-aging and anti tuberculosis drug.
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CAS:141-53-7
Molecular Formula:CHNaO2
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Formic Acid, Sodium Salt; Formatedesodium; Formate Sodium; Perstop Sodium Format
Brief Introduction
Sodium formate is an organic sodium salt which is the monosodium salt of formic acid. It has a role as a buffer and an astringent.
(1) It can be used to produce formic acid, oxalic acid and sodium hydrosulfite.
(2) It can be used as a reagent, disinfectant and mordant for the determination of phosphorus and arsenic.
(3) It is a precipitant of heavy metals. It can precipitate precious metals and form trivalent metal complex ions in solution.
(4) It has buffering effect and can correct the pH value of strong mineral acid.
(5) It can be used as reducing agent.
(6) It can be used in medicine, printing and dyeing industry. Used for alkyd resin coatings, plasticizers, high explosives, acid resistant materials, aviation lubricants, adhesive additives.
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CAS:32315-10-9
Molecular Formula:C3Cl6O3
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Tri-Phosgene; Methanol, Trichloro-, Carbonate (2:1); Trichloromethyl Carbonate; Ditrichloromethyl Carbonate; Bistrichloromethyl Carbonate; BTC; Bis(Trichloromethyl) Carbonate
Brief Introduction
Triphoto gas (BTC), namely, bis (Trichloromethyl) carbonate, is commonly known as solid phosgene, and the chemical formula is c3cl6o3. It is colorless crystal, has the smell of light gas, mainly used as a substitute for phosgene, and is used in medicine, pesticide and organic synthesis, and has better effect than liquid double light gas. The trioptical gas is prepared by the reaction of dimethyl carbonate and chlorine gas. Three light gas at 130 ° C is decomposed around, and the presence of impurities reduces the temperature. There will also be a small amount of decomposition during atmospheric distillation to generate phosgene and double phosgene (Trichloromethyl chloroformate). When chloride exists, the phosgene can produce phosgene safely and quantitatively, which solves the problem that phosgene can not be quantified in the reaction. Triphosgene can produce almost all reactions of phosgene, and can be used as reagents for chloroformylation, chlorination, carbonylation and some polymerization reactions. It can convert primary amine into isocyanate or substituted urea, carboxylic acid into acyl chloride, alcohol into carbonate or aldehyde (with dimethyl sulfate), aldehyde oxime and amide into nitrile, etc.
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CAS:371-41-5
Molecular Formula:C6H5FO
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4-Fluoranylphenol; Phenol, 4-Fluoro-; Para-Fluorophenol; P-Fluorophenol; 4-Fluoro-Phenol; 4-Fluorophenyl Alcohol; P-Fluorphenol; Phenol, P-Fluoro-; Fluorophenol
Brief Introduction
4-Fluorophenol is an important pharmaceutical and pesticide intermediate. It is used in the pharmaceutical industry for the synthesis of insecticidal drugs, gastrointestinal drugs and antiviral drugs, in the agricultural field for the synthesis of herbicides, plant growth regulators and in environmental engineering for algae removal.
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