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31 results about "P-acetaminophenol" patented technology

Method of producing organic compounds in presence of oxyethylene ether catalyst and in a solvent minimized environment

A process of producing organic compounds, such as acetaminophen, nitroalcohols and indoles, employs a catalyst system of an oxyethylene ether and a metal containing inorganic or organic reagent. The oxyethylene ether at least partially complexes the metal of the inorganic or organic reagent. As such, the reactions may be conducted neat. The processes are environmentally friendly and operationally simple.
Owner:TEXAS A&M UNIVERSITY

Acetaminopher DC90 fine particle and preparation method thereof

The invention discloses paracetanol DC90 fine particles and a preparation method thereof. The paracetanol DC90 comprises following materials by weight ratio: 90 percent of paracetanol, 3.50 percent of cornstarch, 3.50 percent of pre gelatinized starch, 2.00 percent of povidone, 0.5 percent of crospovidone and 0.5 percent of stearic acid. Firstly, the paracetanol and the cornstarch are mixed evenly, then the pre gelatinized starch and the povidone are made into starch slurry to be used as bond which is evenly sprayed on the mixture of the fluidied paracetanol and cornstarch, fluidized bed granulation is carried out in the inlet air temperature, the wet particles are dried under the temperature of 80 DEG C and then are cooled at the temperature of 50 DEG C till water conforms to the requirement, the sizes of the particles are adjusted, the stearic acid and the crospovidone are added after the particle sizes are adjusted to be mixed evenly to obtain the paracetanol DC90 fine particles. The invention adopts the above technical proposal to inspect the product, and the particles are fine and uniform and have favorable fluidity, thereby being well and evenly mixed with other small quantities of active components powder.
Owner:ANQIU LUAN PHARMA

Method for rapidly starting normal-temperature short-cut nitrification of municipal sewage by using acetaminophen

The invention discloses a method for rapidly starting normal-temperature short-cut nitrification of municipal sewage by utilizing acetaminophen, and belongs to the technical field of biological sewage treatment. Two treatment process, namely acetaminophen side flow soaking or direct addition of acetaminophen, are adopted to treat the activated sludge in the method, and then the treated activated sludge finally quickly starts short-cut nitrification by inhibiting the activity of NOB. The inhibitor can quickly start normal-temperature short-cut nitrification of municipal sewage.
Owner:BEIJING UNIV OF TECH

Tetrahydroxy phthalocyanine zinc-reduced graphene oxide nano-composite as well as electrochemical sensor prepared from the same and application thereof

The invention discloses a tetrahydroxy phthalocyanine zinc-reduced graphene oxide nano-composite as well as an electrochemical sensor prepared from the tetrahydroxy phthalocyanine zinc-reduced graphene oxide nano-composite and application of the tetrahydroxy phthalocyanine zinc-reduced graphene oxide nano-composite. The tetrahydroxy zinc phthalocyanine-reduced graphene oxide nano composite is formed by combining water-soluble tetrahydroxy zinc phthalocyanine and reduced graphene oxide large pi bonds through non-covalent bonds. The combination of the two improves the disadvantage of poor dispersibility of the two while giving consideration to the advantages of the two, and has the advantages of large specific surface area, good conductivity, strong stability, easy availability, no toxicityand environmental friendliness. The Nafion tetrahydroxy phthalocyanine zinc-reduced graphene oxide nanocomposite is directly coated on the surface of a glassy carbon electrode through a one-step dispensing method, and the method has the advantages of being rapid and simple to operate, good in reproducibility and the like. The prepared sensor is low in cost, good in stability and selectivity, capable of achieving accurate, rapid and high-sensitivity detection of acetaminophen and wide in detection range, the detection limit is as low as 10 nmol / L, and the sensor has potential application valuein the fields of clinical diagnosis, drug analysis and the like.
Owner:HENAN UNIV OF CHINESE MEDICINE

g-C3N4 nanosheet/graphene oxide composite material and preparation method and application thereof

The invention relates to a g-C3N4 nanosheet / graphene oxide composite material and a preparation method and application thereof. According to the composite material, Bulk-g-C3N4 is synthesized througha pyrolysis method, then g-C3N4 nanosheets are synthesized through an ultrasonic-assisted method and finally the g-C3N4 nanosheets are fixed on the surface of graphene oxide through an ultrasonic method to obtain the composite material. The composite material is modified on the surface of a glassy carbon electrode to prepare a novel sensor for simultaneous, rapid and real-time detection of acetaminophen and levofloxacin. Results show that the sensor has a wide linear range, a low detection limit and high sensitivity for detection of two substances. High-sensitivity detection and analysis of acetaminophen and levofloxacin can be realized and high selectivity can be obtained in the complex environment medium. Meanwhile, the composite material has the advantages of being simple in instrumentand equipment, low in analysis cost, rapid, simple, convenient and the like, and a new detection method can be provided for evaluating residual pollution of acetaminophen and levofloxacin in the environment.
Owner:SHANXI UNIV

Anti-oxidization oxytetracycline hydrochloride injection and preparation method thereof

The invention discloses anti-oxidization oxytetracycline hydrochloride injection and a preparation method thereof and relates to the technical field of medicines. The anti-oxidization oxytetracyclinehydrochloride injection is prepared from the following raw materials in parts by weight: 35 to 55 parts of anti-oxidization oxytetracycline hydrochloride, 12 to 15 parts of miloxacin, 10 to 15 parts of enoxacin, 6 to 7 parts of p-acetamidophenol, 22 to 26 parts of herba taraxaci-radix isatidis extracting solution, 6 to 8 parts of glucose, 5 to 8 parts of sodium chloride, 2 to 4 parts of calcium chloride, 3 to 5 parts of zinc sulfate, 80 to 100 parts of ethanol, 16 to 20 parts of triethanolamine, 13 to 16 parts of vitamin C and 180 to 240 parts of purified water; the anti-oxidization oxytetracycline hydrochloride is prepared through a specific method and is matched with other raw materials to use, so that the prepared injection has antibacterial, sterilization and inflammation-diminishing effects; meanwhile, the injection has stable properties and is not easily oxidized and the medicinal effect can be kept for a long period; the injection also can provide necessary nutrients for life bodies, is applicable to disease prevention and bacterium resistance of domestic fowl, domestic animals and large-size animals and has a remarkable curative effect.
Owner:安徽天安生物科技股份有限公司

Specific modified electrode based on metal organic framework and preparation and application thereof

The invention provides a construction method of a specific modified electrode based on a metal organic framework. The preparation method comprises the steps of ultrasonically dispersing an aminated metal organic framework and reduced graphene oxide into N, N-dimethylformamide, and dropwise coating a dispersion liquid on the surface of a polished glassy carbon electrode to prepare a modified electrode rGO-NH2-Cu3(btc)2 / GCE; forming a three-electrode system by taking the rGO-NH2-Cu3(btc)2 / GCE modified electrode as a working electrode; putting the electrode into an H2SO4 solution containing HAuCl4; and depositing the gold nanoparticles on the surface of the electrode by adopting a potentiostatic deposition method, so as to prepare the specific modified electrode Au / rGO-NH2-Cu3(btc)2 / GCE. Themodified electrode can completely separate oxidation peaks of acetaminophen and p-aminophenol, so that simultaneous detection of acetaminophen and p-aminophenol is realized. The detection method is rapid, simple and convenient, and has good anti-interference performance and stability.
Owner:NORTHWEST NORMAL UNIVERSITY

Abscission and crop storage unit

InactiveUS20120101164A1Delaying abscissionDelaying senescenceBiocideOrganic chemistryMetaboliteToxicology
A composition comprising a compound selected from an auxin, an auxin precursor, an auxin metabolite or a derivative of said auxin, auxin precursor or auxin metabolite or a mixture thereof and optionally acetaminophen or a derivative thereof for improving post-harvest storability of crops.
Owner:TAMINCO NV

Nano composite material, glassy carbon composite electrode, manufacturing methods of nano composite material and glassy carbon composite electrode, and electrochemical sensor

The invention discloses a nano composite material, which is prepared from the following components in parts by mass: 2 to 3 parts of MWNTs, 1 to 1.5 parts of CeO2, 184 to 188 parts of a Nafion solution and 1000 parts of ultrapure water. Compared with the prior art, a proper modification material is provided for a working electrode of an electrochemical sensor for simultaneously detecting acetaminophen and p-aminophenol; the high catalytic activity of CeO2 and Nafion and the synergistic effect of CeO2 and Nafion and MWNTs are utilized, the electron transfer capability is further enhanced, and the sensitivity and detection efficiency during detection of acetaminophen and p-aminophenol are improved.
Owner:CHONGQING UNIV OF EDUCATION

Refined yinqiao detoxication dropping pill

This invention relate to a refined chinese medicine Yinqiao Jiedu pills and preparation for cold therapy, characterized in that Dry Ointment Powder of the water extracts of Platcodon Grandiflorum, forsythia fruit, prepared soybean, Glycyrrhiza, Lophatherum gracile Brongn, honeysuckle, arctium fruit, oil of schizonepeta, Menthol, p-acetaminophenol as Active Constituents are made into pills. The objection of the invention is that it overcomes the deficiency of the present Technology, it discloses remarkable characteristics such as high bioavailability, release drugs quickly, significant curative effect, high drugs content, easy administration, lower price, Non-pollution in production. Said drugs have unique formula with the functions of expelling wind, inducing diaphoresis, clearing away heat. Pharmacodynamic study has verified that the performance of pills is superior to conventional oral preparation of refined Chinese medicine Yinqiao Jiedu tablets and it is worth using widely.
Owner:天津同仁堂集团股份有限公司

Preparation of 5-aminosalicylic acid by gas phase catalytic carboxylation

Disclosed is a process for preparing 5-aminosalicylic acid by gas phase catalytic carboxylation, characterized in that carbon dioxide is introduced into a system of p-acetaminophenol and a basic compound at a temperature of 150° C.˜220° C. and a pressure of 0.5˜5.0 MPa in the presence of a catalyst, so as to carry out a gas phase catalytic carboxylation reaction to form a 5-aminosalicylate, and the crude product 5-aminosalicylate is separated, and then acidified to prepare 5-aminosalicylic acid (5-ASA). Since the gas phase catalytic reaction replaces a solid phase thermo-chemical reaction, the reaction is significantly improved in terms of the process flow, reaction conditions, product quality and energy consumption. In addition, the reaction has a short reaction time, good selectivity, high yield and no formation of wastes during the reaction, and is suitable for industrial production.
Owner:ZHEJIANG HUAHAI PHARMACEUTICAL CO LTD +1

Preparation method of composite drug-loaded fiber based on microfluidics spinning

PendingCN114351287AHigh drug loadingTo achieve drug sustained release effectOrganic active ingredientsFilament/thread formingFiberPolymer science
The invention discloses a preparation method of a composite drug-loaded fiber based on microfluid spinning, which comprises the following steps: A1, taking polyvinylpyrrolidone and sodium alginate, respectively adding water, stirring and heating to obtain a polyvinylpyrrolidone solution and a sodium alginate solution; a2, mixing the polyvinylpyrrolidone solution and the sodium alginate solution, and then adding acetaminophen to form a mixed spinning solution; and A3, taking the mixed spinning solution as a core layer, taking a calcium chloride solution as a sheath flow laminar flow, and preparing the continuous composite drug-loaded fiber in a coaxial microfluid spinning mode. The microfluid spinning technology and the ionic cross-linking curing method are combined to prepare the composite drug-loaded fiber which is neatly arranged and uniform in diameter, the drug loading capacity of the composite drug-loaded fiber is improved, and the drug slow-release effect of the composite drug-loaded fiber is achieved.
Owner:SUZHOU UNIV

Carbon nanotube modified electrode for acetaminophen detection and preparation method of carbon nanotube modified electrode

The invention provides a carbon nanotube modified electrode for acetaminophen detection and a preparation method of the carbon nanotube modified electrode. Specifically, the surface of a glassy carbonelectrode is modified with carbon nanotubes, and the glassy carbon electrode is prepared into a detection electrode with three coplanar electrodes, so that accurate determination of acetaminophen isrealized. The carbon nano tube modification layer greatly improves the detection sensitivity and accuracy of the electrode; the electrode has the advantages of high sensitivity, low detection limit, good reproducibility, strong anti-interference capability and the like, the linear range of the electrode for determining acetaminophen is 1.0 * 10 <-4 >-1.0 * 10 <-7 > mol / L, and the detection limit of the electrode is 3.68 * 10 <-8 > mol / L.
Owner:广州钰芯传感科技有限公司

Preparation method of benorilate

The invention relates to a preparation method of benorilate, which relates to the technical field of medicine synthesis. According to the invention, acetylsalicylic acid and acetaminophen are used asraw materials to directly synthesize behenolate under the condition of common catalysis of azodicarboxylic acid ester compounds and triphenylphosphine. The preparation method comprises the following steps: adding acetaminophen and a light-delay reaction catalyst I triphenylphosphine into a reaction bottle, adding an organic solvent, adding a light-delay reaction catalyst II, and uniformly mixing;and adding acetylsalicylic acid in batches within 20 minutes, stirring in an ice bath for 20 minutes, heating to normal temperature, magnetically stirring, and reacting for 8.5 hours to obtain the benorilate. According to the present invention, the acetylsalicylic acid and the p-acetamidophenol are catalyzed by using a light delay reaction catalysis system so as to be esterified, such that the steps are simple, the drugs only need to be sequentially added, the process route is short, and the synthesis cost is effectively reduced.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Preparation process of p-acetaminophenol

The invention provides a preparation technique of p-acetaminophenoxide; the technique includes the following steps: adding phenol, oxammonium hydrochloride, acetic acid and polyphosphate with mass ratio of 1 : 0.85 : 3.0 : 8.5 to 1 : 0.96 : 4.1 : 9.6 into a reactor and sealing the reactor; carrying out reflux reaction for 3.0 to 5.2h under normal pressure and constant temperature in an oil bath of 75 to 85 DEG C; cooling to the temperature of 20 to 30 DEG C; adding ice water of 10 to 15 times of the volume of the mixed matters into the reactor and adjusting pH to 3.5 to 4.5 by using ammonia; adding nitrogen into the reactor to replace air; adding sodium bisulfite of 1 to 2 times of the weight of phenol and then sealing the reactor, continuously carrying out reaction for 5.0 to 7.2h under the normal pressure and constant temperature in the oil bath of 110 to 132 DEG C, cooling, decompressing and vaporizing the solvent water, then using acetone to wash so as to filter out ammonium phosphate salt, combing the filtrate, vaporizing and recycling the acetone to obtain the crude product, using water to re-crystallize to obtain the white crystal of the p-acetaminophenoxide. The preparation technique of the invention takes the phenol, glacial acetic acid and the oxammonium hydrochloride as the raw materials, takes the polyphosphate as a catalyst, adopts one pot method to prepare the p-acetaminophenoxide and has the advantages of simple technique, mild reaction conditions, low manufacture cost and being environment friendly.
Owner:NORTHWEST NORMAL UNIVERSITY

Method for removing acetaminophen in water based on in-situ Fenton reaction

The invention discloses a method for removing acetaminophen in water based on an in-situ Fenton reaction, and belongs to the field of treatment of pollutants in water. The method comprises A) a step of synthesis of iron-doped graphite phase carbon nitride, namely a step of calcining a mixture of ferric ions and melamine at high temperature, washing and drying; B) a step of ultrasonically activating to remove acetaminophen, namely a step of adding iron-doped graphite phase carbon nitride into polluted water containing acetaminophen, ultrasonically activating to generate hydrogen peroxide and hydroxyl free radicals, and oxidizing and degrading the acetaminophen. The method is simple to operate, does not need to introduce ultraviolet light or additionally add hydrogen peroxide or other oxidants, and has the advantages of high removal efficiency and wide application conditions.
Owner:湖北省水利水电科学研究院 +1

P-ethyl phenol aminophenol anal injection for children and its prepn

The present invention is p-acetaminophenol anal injection as antipyretic analgesic for children and its preparation process. P-acetaminophenol anal injection consists of p-acetaminophenol as main material, supplementary material including propylene glycol, polyglycol-400, sodium bisulfite, Nipagin M and complexone III, and water. The medicine is injected into rectum directly and this can avoid pain and direct influence on liver, resulting in lowered toxicity and raised safety.
Owner:湖南康尔佳药业管理集团有限公司

Fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof

The invention discloses fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof, belonging to the technical field of preparation and applicationof luminescent materials. The chemical formula of the fluorescent powder is Lu10Si6O27: x% Eu<3+>, wherein x is larger than or equal to 5 and smaller than or equal to 9. According to the invention, pure fluorescent powder is prepared through a solution combustion method, and the prepared fluorescent powder shows red light emission under excitation of light with a wavelength of 391 nm and shows yellow-green light emission under excitation of light with a wavelength of 462 nm. A modified carbon paste electrode prepared from the fluorescent powder can be used for detecting acetaminophen. The preparation method provided by the invention is simple in process, stable in product performance and suitable for industrial production.
Owner:XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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