CAS 303-98-0-manufacture,factory,supplier from China

(Total 24 Products for CAS 303-98-0)
Purpose 1It can be widely used in food, cosmetics, dietary supplements and other industries.Purpose 2Coenzymes. It is also an important antioxidant and immune booster. It is used for the adjuvant treatment of congestive heart failure, arrhythmia, sinus tachycardia, premature contractions, hypertension and cancer, and for the comprehensive treatment of acute and chronic viral hepatitis and subacute liver necrosis. In addition, it is also used for primary and secondary hyperaldosteronism, cerebrovascular disorders and hemorrhagic shock.
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Cloxazon, chemical name 5-chloro-2-benzoxazolidone, molecular formula C7H4ClNO2, is a muscle relaxant acting on the center, used for various acute and chronic soft tissue (muscle, ligament) sprains, contusions, muscle aches after exercise, muscle spasms caused by central neuropathy and chronic fasciitis.【Chinese alias】Muscle relaxant; Chlordobenazole; 5-Chloro-2-hydroxybenzoxazole; Chloroxazolone; Chlordobenazole; Chlordobenazole; 5-Chloro-2-benzoxazolinone; 5-Chloro-2-benzoxazolone; 6-Chlorobenzoxazolone.【Molecular Formula】C7H4ClNO2 【Molecular Weight】169.57 【CAS】95-25-0【Usage and dosage】Oral:
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An natural compound, colorless obvious liquid with a relative density of 0.971, soluble in natural solvents such as alcohols, ethers and ethyl acetate.
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Chemical and physical properties of benzophenone hydrazoneDensity 1.1±0.1 g/cm3Boiling point 328.0±11.0 °C at 760 mmHgmelting point 95-98 °C(lit.)Molecular Formula C13H12N2Molecular weight 196.248Flash point 152.1±19.3 °CExact mass 196.100052PSA 38.38000LogP 2.79Appearance: White crystalline powderVapor pressure 0.0±0.7 mmHg at 25°CThe refractive index is 1.584Storage conditionsProtect from light, cool and dry place, sealed and storedstabilityStable at room temperature and pressure, white crystalline powder.MolecularMolecular property data:1. Molar refractive index: 62.322.
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Reactive oxygen species (ROS) is O2, with electron products, inclusive of oxygen one electron product oxygen anion O2-, two electron product hydrogen peroxide (H2O2), three electron product hydroxyl radical (OH-), nitric oxide, etc., quick half-life, fats soluble.
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1.3-Butanediol is an organic compound with a molecular formula of C4H10O2, mainly used in the preparation of polyester resin, polyurethane resin, plasticizer, etc., and also used as a humidifier and softener for textiles, paper and tobacco.Chinese Name: 1,3-ButanediolChinese aliases: 1,3-Dihydroxybutane; (±)-1,3-ButanediolEnglish alias: Butanediol; butane-1,3-diol; (3S)-butane-1,3-diol; (3R)-butane-1,3-diolCAS:107-88-0EINECS:203-529-7FEMA registration number: 2842Physical and chemical indicatorsAppearance: colorless, viscous liquid.Melting point (°C): <-54Boiling point (°C): 207°C at 760 mm
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Uroptrazine, additionally recognized as hexamethylenetetramine, has the system C6H12N4 and is an natural compound.It is listed in the "List of Hazardous Chemicals Prone to Explosion" [1] and managed in accordance with the "Measures for the Safety Management of Hazardous Chemicals that Can Be Made into Explosives"Toxicological dataAcute toxicity: LD50: 9200mg/kg (rat venous); 569mg/kg (mouse by way of mouth).Use of methenamine1.
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Appearance: Light yellow crystalline powderMelting Point: 128-130 °C(lit.)Boiling Point:563.2±42.0 °C(Predicted)Density 1.63refractive index1.6200 (estimate)Storage conditions: Refrigerator, Under Inert AtmosphereSolubility soluble in chloroform (a little), methanol (a little)pKa1.22±0.10(Predicted)Morphological solidsThe color is pale yellowStability: Moisture sensitiveInChIKeyCOFDRZLHVALCDU-YVLHZVERSA-NCAS DataBase Reference80756-85-0Brief introductionAE-active ester, chemical name 2-methoxyimino-2-(2-amino-4-thiazolyl)-(z)-thioacetic acid benzothiazole ester.
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Chemical and physical properties of benzophenone hydrazoneDensity 1.1±0.1 g/cm3Boiling point 328.0±11.0 °C at 760 mmHgmelting point 95-98 °C(lit.)Molecular Formula C13H12N2Molecular weight 196.248Flash point 152.1±19.3 °CExact mass 196.100052PSA 38.38000LogP 2.79Appearance: White crystalline powderVapor pressure 0.0±0.7 mmHg at 25°CThe refractive index is 1.584Storage conditionsProtect from light, cool and dry place, sealed and storedstability Stable at room temperature and pressure, white crystalline powder.Molecular Molecular property data:1. Molar refractive index: 62.322.
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Chinese name: tripropylene glycolEnglish name: Tripropylene glycolAlias: H[OC2H3(CH3)]3OHEnglish synonyms: Tripropylenglycol; TRI(PROPYLENE GLYCOL); Tripropyleneglycol,90%; Tripropylene glycol 97%; Tripropylene Glycol Twothe three glycol reduction; Tripropylene Glycol(isomer mix.); 1,1'-(Propylenedioxy)dipropan-2-ol; tripropyleneglycol,mixtureofisomers; [(methylethylene)bis(oxy)]dipropanolChinese Name: Tripropylene glycolChinese synonyms: tripropylene; Diols; Dipropylene glycol; Tris(propylene glycol); trimer 1,2-propanediol; Tripropylene glycol (mixture of isomers); Dipropylene glycol (mi
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Chinese name nitrobenzeneEnglish name nitrobenzeneEnglish aliases more Nitrobenzene physicochemical propertiesDensity 1.205boiling point 210-211 °C(lit.)melting point 5-6 °C(lit.)Molecular Formula C6H5NO2Molecular Weight: 123.10900Flash point 190 °FExact mass 123.03200PSA 45.82000LogP 2.11800Appearance traits yellow liquidVapor density 4.2 (vs air)Vapour pressure 0.15 mm Hg ( 20 °C)refractive index n20/D 1.551(lit.)Storage conditions Storage precautions Store in a cool, ventilated warehouse. Keep away from tinder, heat sources. Keep the container tightly sealed.
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CAS 39263-32-6 Purity 98%Molecular weight 197.04 Molecular components C7H5BrN2Leadtime In inventory Size gItem No. 1031675 Application Chemical, bioindustry, pharmaceuticalFor greater product specifications, please seek advice from consumer service; Product Name: 2-Amino-5-bromobenzonitrile_Leyan reagent; CAS:39263-32-6; Molecular Formula: C7H5BrN2; Molecular weight: 197.04; storage conditions: 2-8 °C, guard from light2-Amino-5-bromobenzonitrileCAS No.
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CAS:21739-92-4Product Category: Chemical Intermediates - Other Intermediates Cas Number: 21739-92-4Product Specifications: 99% Packing: 25 kg Brand: Runde Detailed Description:5-Bromo-2-chlorobenzoic acidChinese synonyms: 2-Chloro-5-bromobenzoic acid; 5-Bromo-2-chlorobenzoic acid; 5-Bromo-2-chlorobenzoic acid; 5-BroMo-2-chlorobenzoic acid, 98+%; 5-Bromo-2-chlorobenzoic acid; 2-Chloro-5-bromobenzoic acid, 99.86%; 5-Bromo-2-chlorobenzoic acid/2-chloro-5-bromobenzoic acid; 5-BroMo-2-chlorobenzoic acid, 98+%Name: 5-Bromo-2-chlorobenzoic acidEnglish synonyms:Benzoic acid, 5-bromo-2-chloro-; 2-CHLOR
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Molecular structure dataMolar refractive index: 41.72 Molar volume (cm3/mol): 128.4 Isotonic specific volume (90.2K): 338.5 Surface tension (dyne/cm): 48.2 Polarizability (10-24cm3): 16.54 Computational chemical dataHydrophobic parameters calculation reference value (XlogP): 1.7 Number of hydrogen bonded donors: 1 Number of hydrogen bond receptors: 3 Number of rotatable chemical bonds: 1 Number of tautomers:Topological molecular polar surface area (TPSA): 54.4 Number of heavy atoms: 11 Surface charge: 0 Complexity: 206 Number of
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2,3,4,5-TETRAFLUORBENZOYLCHLORID2,3,4,5-TETRAFLUOROBENZOYL CHLORIDEBenzoyl chloride, 2,3,4,5-tetrafluoro- (9CI)2,3,4,5-Tetrafluorobenzoyl2,3,4,5-Tetrafluorobenzoyl chloride 98%2,3,4,5-TETRAFLUOROBEZOYL CHLORIDE2,3,4,5-Tetrafluorobenzoylchloride98%94-24-62,3,4,5-Tetrafluorobenzoic acid chlorideBoiling point 65-66 °C 10mmDensity: 1.58 g/mL at 25 °C(lit.)Refractive index n20/D 1.4787(lit.)Flash point 194 °FSpecific gravity 1.580Sensitivity: Moisture sensitivityBRN5266860InChIKeyXWCKIXLTBNGIHV-UHFFFAOYSA-NCAS DataBase Reference94695-48-4
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2,3,4,5-TETRAFLUORBENZOYLCHLORID2,3,4,5-TETRAFLUOROBENZOYL CHLORIDEBenzoyl chloride, 2,3,4,5-tetrafluoro- (9CI)2,3,4,5-Tetrafluorobenzoyl2,3,4,5-Tetrafluorobenzoyl chloride 98%2,3,4,5-TETRAFLUOROBEZOYL CHLORIDE2,3,4,5-Tetrafluorobenzoylchloride98%94-24-62,3,4,5-Tetrafluorobenzoic acid chlorideBoiling point 65-66 °C 10mmDensity: 1.58 g/mL at 25 °C(lit.)Refractive index n20/D 1.4787(lit.)Flash point 194 °FSpecific gravity 1.580Sensitivity: Moisture sensitivityBRN5266860InChIKeyXWCKIXLTBNGIHV-UHFFFAOYSA-NCAS DataBase Reference94695-48-4
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CAS 39263-32-6 Purity 98%Molecular weight 197.04 Molecular formula C7H5BrN2Leadtime In stock Size gItem No. 1031675 Application Chemical, bioindustry, pharmaceuticalFor more product specifications, please consult customer service; Product Name: 2-Amino-5-bromobenzonitrile_Leyan reagent; CAS:39263-32-6; Molecular Formula: C7H5BrN2; Molecular weight: 197.04; storage conditions: 2-8 °C, protect from light2-Amino-5-bromobenzonitrileCAS No.
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Chinese aliasBromazepam Impurity A Bromazepam Impurity A(EP) Standard 2-Amino-5-bromophenyl-2-pyridylmethanone 2-(2-amino-5-bromobenzoyl)pyridineEnglish alias2-(5-Bromo-2-aminobenzoyl)pyridine(2-Amino-5-bromophenyl)-2-pyridinylmethanone2-(2-Amino-5-bromobenzoyl)pyridineKetone, 2-amino-5-bromophenyl 2-pyridyl2-Amino-5-bromophenyl-2-pyridylmethanone2-Amino-5-bromophenyl 2-pyridyl ketone(2-amino-5-bromophenyl)-pyridin-2-ylmethanone2-(2-AMINO-5-BROMOBENZOYL)  PYRIDINE4-bromo-2-[(pyridin-2-yl)carbonyl]anilineMethanone, (2-amino-5-bromophenyl)-2-pyridinyl-(2-Amino-5-bromophenyl)(2-pyridinyl)met
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Product Category: Chemical Intermediates - Other Intermediates Cas Number: 21739-92-4Product Specifications: 99% Packing: 25 kg Brand: Runde Detailed Description:5-Bromo-2-chlorobenzoic acidChinese synonyms: 2-Chloro-5-bromobenzoic acid; 5-Bromo-2-chlorobenzoic acid; 5-Bromo-2-chlorobenzoic acid; 5-BroMo-2-chlorobenzoic acid, 98+%; 5-Bromo-2-chlorobenzoic acid; 2-Chloro-5-bromobenzoic acid, 99.86%; 5-Bromo-2-chlorobenzoic acid/2-chloro-5-bromobenzoic acid; 5-BroMo-2-chlorobenzoic acid, 98+%Name: 5-Bromo-2-chlorobenzoic acidEnglish synonyms:Benzoic acid, 5-bromo-2-chloro-; 2-CHLORO-5-BROMOBENZO
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English name: Febuxostat   CAS:144060-53-7Description: mild inexperienced to off-white powder.Uses: Oxidase and dehydrogenase inhibitors.
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CAS No. 503615-07-4Molecular components C22H22N4O4 molecular weight 406.43EINECS No.
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S-3-Hydroxytetrahydrofuran [1]English name: S-3-hydroxytetrahydrofuranChinese aliases: (S)-(+)3-hydroxy-tetrahydrofuran; (S)-(+)-3-Hydroxytetrahydrofuran; (S)-3-Hydroxytetrahydrofuran;S-3-Hydroxytetrahydrofuran; Afatinib intermediatesSYNONYMS: (S)-(+)-3-HYDROXY TETAHYDRO FURAN; (S)-(-)-3-HYDROXY TETRAHYDRO FURAN; S-(+)-3-HYDROXYTETRAHYDROFURAN; (S)-3-Hydroxyterthydrofurane; S-(+)-3-Hydroxytetrahydofuran; (2S)-2-Hydroxy-1,4-epoxybutane; (3S)-3-Hydroxytetrahydrofuran; (2S)-1,4-Epoxy-2-hydroxybutane; Afatinib intermediatesCAS:86087-23-2Molecular formula: C4H8O2Molecular weight: 88.11Assay: 98%Pro
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CAS No. 503615-07-4 Molecular formula C22H22N4O4 molecular weight 406.43EINECS No.
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Uses: used as solvents, plasticizers, antifreeze, however additionally used to make flavors and cosmetics.Part I: Chemical NamesChemical Chinese Name: n-octanol; 1-OctanolChemical English name: Octanol; Capryl alcoholChinese frequent title or change name:Synonyms:CAS No.: 111-87-5Molecular Formula: C8H18OMolecular weight: 130.23Part II: Composition/composition informationPure chemical mixtureChemical name: n-octanol; 1-OctanolHazardous Substance Content CAS No.Octanol a hundred 111-87-5Part III: Overview of HazardsHazard Category:Route of invas
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Medicine intermediate refers to a compound generated as an intermediate step in the process of synthetic drugs. It has high purity and activity, which can synthesize target drugs through further chemical reactions. Medicine intermediates are widely used in the pharmaceutical industry, covering multiple fields. The classification of pharmaceutical intermediates and its application areas will be introduced below.1. Carboxylic acid intermediate:The intermediate of the carboxylic acid refers to the compound of the carboxylic acid group, and the common ones are benzoic acid and propylic acid.
I. Overview of chemical and pharmaceutical intermediatesChemical pharmaceutical intermediates are a very important part of the pharmaceutical industry, referring to raw materials or semi-finished products in the pharmaceutical industry. These substances undergo a series of chemical reactions to eventually form pharmaceutical products. These chemicals usually exist in liquid or solid form and belong to various types of organic compounds such as acids, alcohols, carboxylic acids, phenols, cork and so on.
Intermediate production of chemical medicine is a work involving a large number of chemicals. If it is not managed and controlled correctly, it may bring serious risks and pollution to the environment. In order to reduce environmental risks in the production of chemical medicine, we need to improve and control from the following aspects.First, establish a scientific and standardized production process. The production of chemical medicine needs to go through multiple steps and reactions. Each step needs to carefully evaluate and formulate corresponding operating procedures.
April 23, 2020. Customized in the middle of Shandong Pharmaceutical. The so -called Shandong pharmaceutical intermediate is actually some chemical raw materials or chemical products for drug synthesis process. This kind of chemical product does not require the production license of drugs. It can be produced in ordinary chemical plants. As long as it reaches some levels, it can be used for the synthesis of drugs.There are more than 2,000 raw materials and intermediates that need to be matched with chemicals each year, with more than 2.5 million tons.
May 13, 2020. Pharmaceutical intermediate body fluorine customized. Pharmaceutical fluorine: colorless liquid. The melting point -42 ℃. Boiling point 85 ° C. Refractive index (ND20) 1.4650. Relators (D420) 1.024. Insuvenate in water and mixes with ethanol, ether, acetone, and benzene. Apineine reacts through Schiemann (G. Schiemann).Ah. After the aniline was descended to -8 ° C after 31%hydrochloride, and the sodium nitrite solution was nitroded.
Shandong is one of the important pharmaceutical production bases in the country, and the production production is relatively concentrated. The treatment of Shandong Pharmaceutical Intermediate waste is essential for protecting the environment, human health, and sustainable enterprise. This article will discuss how to properly handle waste in the production of Shandong pharmaceutical intermediates.First, reasonable classification and storage wasteReasonable classification and storage waste are the first step in waste treatment.