Taprostene sodium salt_CAS号87440-45-7_M8810说明书_AbMole中国
戴斯马丁氧化剂
戴斯马丁氧化剂近年来,有机高价碘化合物作为一种容易制备、性能温和、选择性高而且环境友好的有机合成新试剂被广泛地应用于现代有机合成化中。
Dess-Martin高价碘化合物(DMP)是其中研究最多、应用最广的试剂之一。
戴斯马丁氧化剂〔也称Dess-Martin高碘试剂〕是一种常用的、温和的、选择性好的氧化试剂。
经常用于将伯醇氧化成醛、仲醇氧化成酮。
其优点是反应条件温和、速度适中、用量少、后处理简单。
其制备方法可以由价格便宜的邻碘苯甲酸用溴酸钾在适当浓度的硫酸溶液中氧化成环得到化合物,该化合物再经过醋酐的处理得Dess-Martin periodinane试剂。
【试剂概况】中文名称: 戴斯马丁氧化剂英文名称: Dess-Martin periodinaneCAS号: 87413-09-0分子式:C13H13IO8分子量:424.14熔点:130-133℃沸点:40密度:1.369 g/mL at 25 °C储存条件:0-6℃敏感性:Light Sensitive结构式【试剂制备】第一步:在2L干净的烧瓶中加入0.73M的硫酸730毫升,边搅拌边小心加入邻碘苯甲酸〔CAS: 88-67-5〕85.2克;在保持剧烈搅拌和温度低于55℃的情况下,小心加入溴酸钾76克。
加完后,让其升至65℃搅拌3.6 小时。
冷却至0℃,过滤,并用1000毫升去离子水洗涤,然后用50mL×2的乙醇洗涤,干燥得到89克化合物1 (93%)。
注意事项:小心处理,防止爆炸。
据文献建议,用乙醇洗涤能抑制爆炸,尽可能地把溴酸盐和其他杂质洗干净,以降低可能爆炸的危险。
第二步:在1L的圆底烧瓶中加入醋酐400毫升和含一个结晶水的对甲苯磺酸0.5克。
再将100克化合物2在搅拌状态下小心加入其中。
插好干燥管,升温至80℃并搅拌2小时。
冷却至0℃,过滤,用无水乙醚洗涤50mL×5次,得到白色晶型固体,即Dess-Martin 高碘试剂138 g (91%)。
粉状美斯特(蛋氨酸羟基类似物)仅用于为奶牛提供蛋氨酸
2. 产品组成及成分信息
成 分 含量% CAS- No. EINECS-No. 有害杂质
载体
2-羟基-4-甲硫基 丁酸异丙酯
57296-04-5
—
二氧化硅 无
CAS-Nr[7631-86-9]
3. 危害识别
理化危害:供应的物质中无有害影响 健康危害:供应的物质中无有害影响 环境危害:在正常使用时无已知的环境危害
皮肤接触: 对兔子皮肤无刺激 吸 入: 无影响 慢性毒性:致癌影响:无致癌影响 致突变影响:AMES 试验测定无致突变影响;Eukaryote 试验测 定无致突变影响 生殖毒性:无影响 过敏性:无已知过敏反应 12. 生态信息 迁移性:产品可能转移的途径:水 生物积累性:无潜在的生物积累性 13. 善后处理 废弃物处理: 请勿倾注于排水管。在遵从 1990 年环境保护法规的要求下可焚烧处理(请 参照 IPR5/1) 污染物包装处理: 清空污染物; 使用热水和合适的清洗剂去除脂肪; 在遵从环保部门 1990 法规要求下可焚烧处理(请参照 IPR5/1); 请注意按区域地方相关污法规作出染物处理。
材料安全数据表
粉状美斯特Ⓡ (蛋氨酸羟基类似物) 仅用于为奶牛提供蛋氨酸
饲料添加剂 HMBi C.A.S 号:57296-04-5 二氧化硅 C.A.S 号:7631-86-9 保证值:含 2-羟基-4-甲硫基丁酸异丙酯不低于 57%
1. 化学产品及公司名称
产品信息:产品名称粉状美斯特 TM
产品使用:推荐作为动物饲料使用
16. 其他信息
此材料安全数据表严格按照 2001/59/EEC,2001/58/EEC,1999/45/EEC 标准 执行
分子量:192.28g 化学结构:HMBi(2-羟基-4-甲硫基丁酸异丙酯)
注射用头孢曲松说明书
注射用头孢曲松说明书篇一:注射用头孢曲松钠说明书注射用头孢曲松钠说明书请仔细阅读说明书并在医师的指导下使用。
【药品名称】通用名称:注射用头孢曲松钠英文名称:Ceftriaxone Sodium for Injection汉语拼音:Zhusheyong Toubaoqusongna【成份】本品主要成份为头孢曲松钠化学名称:[6R[6α,7β(Z )]]-3-[[(1,2,5,6-四氢-2-甲基-5,6-二氧代-1,2,4-三嗪-3-基)硫代]甲基]-7-[[(2-氨基-4-噻唑基)(甲氧亚氨基)乙酰基]氨基]-8-氧代-5-硫杂-1-氮杂双环[4.2.0]辛-2-烯-2-羧酸二钠盐三倍半水合物化学结构式:分子式:C18H16N8Na2O7S3?3 1/2 H2O分子量:661.59【性状】本品为白色或类白色结晶性粉末;无臭。
【适应症】适用于对本品敏感的致病菌引起呼吸道感染(尤其是肺炎)、耳鼻喉感染(如急性中耳炎)、泌尿系统感染、败血症、脑膜炎(如播散性莱姆病早、晚期)、骨和关节感染、皮肤软组织感染、腹腔感染(腹膜炎、胆道及胃肠道感染)、生殖系统感染包括淋病,也可用于术前预防感染。
【规格】按C18H18N8O7S3计算 (1)0.75g (2)1.0g(3)1.5g (4)2.5g (5)3.0g (6)4.0g【用法用量】成年人及12岁以上儿童,体重50公斤以上儿童均使用成人剂量,通常剂量是1-2g,每日一次,危重病人或由中度敏感菌引起的感染,剂量可增至4g,每日一次。
新生儿、婴儿及12岁以下儿童,建议以下剂量每日使用一次:新生儿(14天以下)每日剂量为按体重20-50mg/kg,不超过50mg/kg,无需区分早产儿及足月婴儿。
婴儿及儿童(15天至12岁)每日剂量按体重20-80mg/kg用药方法肌肉注射:本品1.0g溶于1,盐酸利多卡因3.5ml中用于肌肉注射,以注射于相对大些的肌肉为好,不主张在一处肌肉内注射1g以上剂量。
USP42-NF37硫酸软骨素钠盐
Printed on: Wed Dec 18 2019, 14:08:10 pmPrinted by: L YCurrently O cial as of: 18-Dec-2019O cial as of 1-Jan-2018DocId: GUID-CBC50321-4A1E-42DC-AB47-4A7C9EE59805_3_en-USPrinted from: https:///uspnf/document/GUID-CBC50321-4A1E-42DC-AB47-4A7C9EE59805_3_en-US?highlight=Chondroitin%20Sulfate%20Sodium © 2019 USPCChondroitin Sulfate SodiumChondroitin, hydrogen sulfate, sodium salt[9082-07-9].DEFINITION Chondroitin Sulfate Sodium is the sodium salt of the sulfated linear glycosaminoglycan obtained from bovine, porcine, or avian cartilages of healthy and domestic animals used for food by humans. Chondroitin Sulfate Sodium consists mostly of the sodium salt of the sulfate ester of N -acetylchondrosamine (2-acetamido-2-deoxy-β-D -galactopyranose) and D -glucuronic acid copolymer. These hexoses are alternately linked β-1,4 and β-1,3 in the polymer. Chondrosamine moieties in the prevalentglycosaminoglycan are monosulfated primarily on position 4 and less so on position 6. It contains NL T 90.0% and NMT 105.0% of chondroitin sulfate sodium, calculated on the dried basis.[N OTE — Chondroitin Sulfate Sodium is extremely hygroscopic once dried. Avoid exposure to the atmosphere, and weigh promptly.]IDENTIFICATION•A. I NFRARED A BSORPTION 〈197K 〉•B. I DENTIFICATION T ESTS —G ENERAL 〈191〉, SodiumSample solution:0.5 g in 10 mL of waterAcceptance criteria:Meets the requirements•C. D ISACCHARIDE C OMPOSITION :The chromatogram of the enzymatically digested Sample solution as obtained in the test for Limit of Nonspeci c Disaccharides shows three main peaks corresponding to dehydrated glucuronic acid-[1→3]-chondrosamine-4- sulfated (ΔDi-4S), dehydrated glucuronic acid-[1→3]-chondrosamine-6- sulfated (ΔDi-6S), and nonsulfated dehydrated glucuronic acid-[1→3]-chondrosamine (ΔDi-0S) in the enzymatically digested Standard solution . By peak-area response, ΔDi-4S is the most abundant, followed by ΔDi-6S, with ΔDi-0S being the least abundant of the three. The ratio of the peak response of the ΔDi-4S to the ΔDi-6S is NL T 1.0.•D. S PECIFIC R OTATION :Meets the requirements for Optical Rotation 〈781S 〉, Speci c Rotation in Speci c TestsCOMPOSITION•C ONTENT OF C HONDROITIN S ULFATE S ODIUMStandard solutions:1.5, 1.0, and 0.5 mg/mL of USP Chondroitin Sulfate Sodium RS in waterSample solution:Transfer 100 mg of dried Chondroitin Sulfate Sodium to a 100-mL volumetric ask, dissolve in 30 mL of water, and dilute with water to volume.Diluent:Weigh about 297 mg of monobasic potassium phosphate, 492 mg of dibasic potassium phosphate, and 250 mg of polysorbate 80, and transfer to a 1-L beaker.Dissolve in 900 mL of water, and adjust with potassium hydroxide or phosphoric acid to a pH of 7.0 ± 0.2. Dilute with water to 1 L, and mix thoroughly.Titrimetric system(See Titrimetry 〈541〉.)Mode:Photometric titrationTitrant:1 mg/mL of cetylpyridinium chloride in water. Degas before use.Endpoint detection:Turbidimetric with a photoelectric probeAnalysisSamples:Standard solutions , Sample solution , and DiluentTransfer 5.0 mL each of the Standard solutions and the Sample solution to separate titration vessels, and add 25 mL of Diluent to each. Stir until a steady reading is obtained with a phototrode either at 420, 550, or 660 nm. Set the instrument to zero in absorbance mode. Titrate with Titrant using the phototrode to determine the endpoint turbidimetrically. From a linear regression equation, calculated using the volumes of Titrant consumed versus concentrations of the Standard solutions ,determine the concentration of chondroitin sulfate sodium in the Sample solution .Calculate the percentage of chondroitin sulfate sodium in the portion of Chondroitin Sulfate Sodium taken:Result = (C /C ) × 100C = concentration of chondroitin sulfate sodium in the aliquot of the Sample solution , obtained from the regression equation (mg/mL)C = concentration of Chondroitin Sulfate Sodium in the Sample solution (mg/mL)Acceptance criteria:90.0%–105.0% on the dried basisIMPURITIES•R ESIDUE ON I GNITION 〈281〉:20.0%–30.0% on the dried basis•C HLORIDE AND S ULFATE 〈221〉, Chloride :NMT 0.50%; a 0.10-g portion shows no more chloride than corresponds to 0.7 mL of 0.020 N hydrochloric acid.•C HLORIDE AND S ULFATE 〈221〉, SulfateSample solution:Dissolve 200 mg in 40 mL of water. Add 10 mL of a 30-mg/mL solution of cetylpyridinium chloride, pass through a lter, and use a 25-mL portion of the ltrate.Acceptance criteria:NMT 0.24%; the Sample solution shows no more sulfate than corresponds to 0.25 mL of 0.020 N sulfuric acid.•E LECTROPHORETIC P URITY[C AUTION —Voltages used in electrophoresis can readily deliver a lethal shock. The hazard is increased by the use of aqueous buffer solutions and the possibility of working in damp environments. The equipment, with the possible exception of the power supply, should be enclosed in either a grounded metal case or a case made of insulating material. The case should have an interlock that deenergizes the power supply when the case is opened, after which reactivation should be prevented until activation of a reset switch is carried out. High-voltage cables from the power supply to the apparatus should preferably be a type in which a braided metal shield completely encloses the insulated central conductor, and the shield should be grounded. The base of the apparatus should be grounded metal or contain a grounded metal rim that is constructed in such a way that any leakage of electrolyte will produce a short that will deenergize the power supply before the electrolyte can ow beyond the protective enclosure. If the power supply contains capacitors as part of a lter circuit, it should also contain a bleeder resistor to ensure discharge of the capacitors before the protective case is opened. A shorting bar that is activated by opening the case may be considered as an added precaution. Because of the potential hazard associated with electrophoresis,laboratory personnel should be completely familiar with electrophoresis equipment before using it.]Barium acetate buffer:Dissolve 25.24 g of barium acetate in 900 mL of water. Adjust with acetic acid to a pH of 5.0, and dilute with water to 1000 mL.Staining reagent:Dissolve 1 g of toluidine blue in 1000 mL of 0.1 M acetic acid.Standard solution A:30 mg/mL of USP Chondroitin Sulfate Sodium RS in waterU UStandard solution B:Dilute 1 mL of Standard solution A with water to 50 mL.Sample solution:30 mg/mL of Chondroitin Sulfate Sodium in waterAnalysis:Fill the chambers of an electrophoresis apparatus suitable for separations on cellulose acetate membranes (a small submarine gel chamber or one dedicated to membrane media) with Barium acetate buffer . Soak a cellulose acetate membrane, 5–6 cm × 12–14 cm, in Barium acetate buffer for 10 min, or until evenly wetted, then blot dry between two sheets of absorbent paper. Using an applicator suitable for electrophoresis, apply equal volumes (0.5 µL) of Standardsolution A , Standard solution B , and Sample solution to the brighter side of the membrane held in position in an appropriate applicator stand or on a separating bridge in the chamber. Ensure that both ends of the membrane are dipped at least 0.5–1.0 cm deep into the buffer chambers. Apply a constant 60 V (6 mA at the start) for 2 h.[N OTE —Perform the application of solutions and voltage within 5 min because further drying of the blotted paper reduces sensitivity.]Place the membrane in a plastic staining tray, and with the application side down, oat or gently immerse in Staining reagent for 5 min. Then stir the solution gently for 1 min. Remove the membrane, and destain in 5% acetic acid until the background clears. Compare the bands. [N OTE —Document the results by taking a picture within 15 min of completion of destaining.]Acceptance criteria:The electropherogram from the Sample solution exhibits a major band that is identical in position to the band from Standard solution A . The band from Standard solution B is clearly visible at a mobility similar to the band from Standard solution A . Any secondary band in the electropherogram of the Sample solution is not more intense than the band from Standard solution B . NMT 2% of any individual impurity is found. [N OTE —Document the results by taking a picture within 15 min of completion of destaining.]•L IMIT OF P ROTEINSolution A:20 mg/mL of sodium tartrate dihydrateSolution B:10 mg/mL of cupric sulfateSolution C:20 mg/mL of anhydrous sodium carbonate in 0.1 M sodium hydroxideDilute Folin-Ciocalteu reagent:Dilute Folin-Ciocalteu phenol TS with water (1:5). Prepare immediately before use.Alkaline cupric tartaric reagent:Mix 1 mL each of Solution A and Solution B , and to the mixture slowly add 100 mL of Solution C with stirring. Use within 24 h, and discard afterward.Standard solution:36 µg/mL of bovine serum albumin certi ed standard in waterSample solution:Transfer a portion of Chondroitin Sulfate Sodium, equivalent to 60 mg of the dried substance, to a 100-mL volumetric ask, and dissolve in and dilute with water to volume.Instrumental conditions(See Ultraviolet-Visible Spectroscopy 〈857〉.)Analytical wavelength:750 nmBlank:WaterAnalysisSamples:Standard solution , Sample solution , and BlankAdd 2.0 mL of freshly prepared Alkaline cupric tartaric reagent to test tubes containing 2.0 mL of the Standard solution , 2.0 mL of the Sample solution , or 2.0 mL of the Blank . After 10 min, add 1.0 mL of Dilute Folin-Ciocalteu reagent to each test tube, and mix immediately and vigorously. After 30 min, measure the absorbance of the Standard solution and Sample solution against the Blank .Acceptance criteria:NMT 6.0% on the dried basis; the absorbance of the Sample solution is NMT the absorbance of the Standard solution .CONTAMINANTS•M ICROBIAL E NUMERATION T ESTS 〈2021〉:The total bacterial count does not exceed 10 cfu/g, and the total combined molds and yeasts count does not exceed 10 cfu/g.•A BSENCE OF S PECIFIED M ICROORGANISMS 〈2022〉:It meets the requirements of the tests for absence of Salmonella species and Escherichia coli .SPECIFIC TESTS•L IMIT OF N ONSPECIFIC D ISSACCHARIDESSolution A:Water adjusted with 0.1 N hydrochloric acid to a pH of 3.5Solution B:1 M sodium chloride adjusted with 0.1 N hydrochloric acid to a pH of 3.5Mobile phase:See Table 1.Table 1Time (min)Solution A (%)Solution B (%)0.010004.5100021.0613921.11000Buffer solution:50 mM tris(hydroxymethyl)aminomethane and 60 mM sodium acetate, adjusted with diluted hydrochloric acid to a pH of 8.0Blank:WaterChondroitinase AC solution:Use appropriate chondroitinase AC that is capable of cleaving the N -acetylhexosaminide linkage in chondroitin 4- sulfate and chondroitin 6-sulfate, yielding Δ-unsaturated disaccharides (ΔDi-0S, ΔDi-4S, and ΔDi-6S). The working concentration of the chondroitinase AC in Buffer solution must be su cient for a complete digestion and meet the enzyme suitability requirement that follows.[N OTE —If Chondroitinase AC from Arthrobacter auresens is used, 0.2 Units/mL in Buffer solution is a typical working concentration; if Chondroitinase AC fromFlavobacterium heparium is used, 3 Units/mL in Buffer solution is a typical working concentration. The working enzyme concentration may be increased if a complete digestion could not be achieved. The working enzyme aliquots should be stored at −20° when not in use for a period of time to avoid a decrease in the enzyme activity.A working enzyme solution is typically stable for 4 days when stored at 4°.]Enzyme suitability:Dilute the digested Standard solution and digested Blank (see Analysis section) (1 in 10), and measure the absorbance at 230 nm in 1-cm path cells.Make correction with the diluted Blank .Calculate the absorptivity of USP Chondroitin Sulfate Sodium RS :Result = A /(C × D × d )A = absorbance of the diluted and digested Standard solutionC = concentration of USP Chondroitin Sulfate Sodium RS in the Standard solution (mg/mL)D = dilution factor of digested Standard solution (1/5)1232434d = dilution factor for the UV measurement (1/10)Enzyme suitability requirement:The absorptivity of the digested USP Chondroitin Sulfate Sodium RS is NL T 8 AU · mL · mg · cm .Standard solution:2.4 mg/mL of dried USP Chondroitin Sulfate Sodium RS in waterSample solution:Transfer about 250 mg of dried (105° for 4 h) Chondroitin Sulfate Sodium to a 100-mL volumetric ask, and dissolve in and dilute with water to volume.System suitability solution:Add 1 volume of Standard solution to 1 volume of Sample solution .Chromatographic system(See Chromatography 〈621〉, System Suitability .)Mode:LCDetector:UV 230 nmColumn:4.6-mm × 25-cm; 5-µm packing L14Flow rate:1 mL/minInjection volume:25 µL[N OTE —The Injection volume may be decreased to improve the peak shape of the analytes.]System suitabilitySamples:Standard solution , Sample solution , and System suitability solution (prepared as directed for Samples in the Analysis )[N OTE —The relative retention times for the ΔDi-0S, ΔDi-6S, and ΔDi-4S peaks are 0.80, 0.97, and 1.0, respectively.]Suitability requirementsChromatogram similarity:The chromatogram of the Standard solution is similar to that of the reference chromatogram provided with USP Chondroitin Sulfate Sodium RS .Resolution:NL T 1.0 between the ΔDi-4S and ΔDi-6S peaks, Standard solutionRecovery factor:NL T 95% of the USP Chondroitin Sulfate Sodium RS added to the Sample solution[N OTE —This test is intended to demonstrate the absence of enzyme inhibition by impurities in the articles being tested. Performance of this test is required only for the articles being tested not meeting the Acceptance criteria . The Recovery factor can be calculated as follows:Result = {[(2 × Σr ) − Σr ]/Σr } × 100Σr = sum of the peak areas of ΔDi-0S, ΔDi-4S, and ΔDi-6S from the System suitability solutionΣr = sum of the peak areas of ΔDi-0S, ΔDi-4S, and ΔDi-6S from the Sample solutionΣr = sum of the peak areas of ΔDi-0S, ΔDi-4S, and ΔDi-6S from the Standard solution]AnalysisSamples:Blank , Standard solution , Sample solution , and System suitability solutionIn four separate vials, combine 4 volumes (e.g., 800 µL) of Chondroitinase AC solution with 1 volume (e.g., 200 µL) each of Standard solution , Sample solution ,System suitability solution , and Blank . Mix thoroughly. Incubate at 37° for 3 h. [N OTE —the incubation period may be increased, if necessary, to complete thedigestion.] Allow the solutions to cool before injection.Calculate the percentage of speci c disaccharides in the portion of Chondroitin Sulfate Sodium taken:Result = (Σr /Σr ) × (C /C ) × 100Σr = sum of the peak areas of ΔDi-0S, ΔDi-4S, and ΔDi-6S from the Sample solutionΣr = sum of the peak areas of ΔDi-0S, ΔDi-4S, and ΔDi-6S from the Standard solutionC = concentration of chondroitin sulfate sodium in the Standard solution (mg/mL)C = concentration of Chondroitin Sulfate Sodium in the Sample solution (mg/mL)Calculate the content of nonspeci c disaccharides in the sample taken:Result = CSC − SDCCSC = chondroitin sulfate sodium content from the test for Content of Chondroitin Sulfate Sodium (%)SDC = speci c disaccharides content (%)Acceptance criteria:NMT 10.0%•C LARITY AND C OLOR OF S OLUTIONSample solution:Transfer 2.5 g of Chondroitin Sulfate Sodium to a 50-mL volumetric ask. Dissolve in and dilute with carbon dioxide-free water to volume, and examine immediately.Instrumental conditions(See Ultraviolet-Visible Spectroscopy 〈857〉.)Analytical wavelength:420 nmCell:1 cmBlank:Carbon dioxide-free waterAnalysis:Measure the absorbance of the Sample solution .Acceptance criteria:NMT 0.35•O PTICAL R OTATION 〈781S 〉, Specific RotationSample solution:30 mg/mLAcceptance criteria:–20.0° to –30.0°•P H 〈791〉:5.5–7.5, in a solution (1 in 100)•L OSS ON D RYING 〈731〉[N OTE — Chondroitin Sulfate Sodium is extremely hygroscopic once dried. Avoid exposure to the atmosphere, and weigh promptly.]Analysis:Dry at 105° for 4 h.Acceptance criteria:NMT 12.0%ADDITIONAL REQUIREMENTS•P ACKAGING AND S TORAGE :Preserve in tight containers.–1–1SY U S SY U S U S S U U S S U•L ABELING :Label it to state the source(s) from which the article was derived, whether bovine, porcine, avian, or a mixture of any of them.•USP R EFERENCE S TANDARDS 〈11〉USP Chondroitin Sulfate Sodium RS Suitable cellulose acetate membranes for electrophoresis are available from Malta Chemetron SRL, Milano, Italy; Fluka Chemical Corp., Milwaukee, WI; and DiaSys Corp.,Waterbury, CT ( ). Suitable applicators are available from DiaSys Corp., Waterbury, CT ( ) and Helena Laboratories, Beaumont, TX ( ). Chondroitinase AC from Arthrobacter auresens , Chromadex, part number ASB-00003613-10. Chondroitinase AC from Flavobacterium heparium , ≥200 units/mg protein, Sigma-Aldrich, catalog number E2039.Auxiliary Information - Please check for your question in the FAQs before contacting USP .Topic/QuestionContact Expert Committee CHONDROITIN SULFATE SODIUM Binu Koshynull NBDS2015 Non-botanical Dietary Supplements 2015Chromatographic Columns Information: Chromatographic ColumnsMost Recently Appeared In:Pharmacopeial Forum: Volume No. 38(6)Page Information:USP42-NF37 - 4842USP41-NF36 - 4539USP40-NF35 - 6899Current DocID: GUID-CBC50321-4A1E-42DC-AB47-4A7C9EE59805_3_en-USPrevious DocID: GUID-CBC50321-4A1E-42DC-AB47-4A7C9EE59805_1_en-US1234。
知母宁分子式
知母宁分子式
知母宁(Momordin)是一种从知母植物(Momordica charantia)中提取的生物活性化合物,具有广泛的药用价值。
它的分子式为C20H24O6,结构中包含一个环氧基和一个双键,使得知母宁具有独特的化学性质。
知母宁的化学性质使其具有良好的抗氧化、抗炎、抗肿瘤、抗菌和抗病毒作用。
在医药领域,知母宁可以用于治疗各种疾病,如高血压、糖尿病、病毒性感冒等。
此外,它还可以作为保健品食用,提高免疫力,预防疾病。
知母宁在医药领域的应用前景十分广阔。
目前,我国科学家正在研究将其开发为新型药物,以治疗癌症、病毒感染等疑难杂症。
此外,知母宁还可以作为农药和兽药,提高农作物的产量和品质,减少病虫害的发生。
知母宁的提取与制备方法是研究的关键环节。
通常采用醇提法、超声波辅助提取法等方法从知母植物中提取知母宁。
提取物经过分离、纯化后,可以得到高纯度的知母宁。
在制备过程中,要注意控制温度、压力等条件,以保证知母宁的生物活性不受破坏。
总之,知母宁作为一种具有广泛药用价值的生物活性化合物,其化学性质、药用价值和制备方法等方面的研究具有重要意义。
随着科学技术的不断发展,知母宁在医药领域的应用前景将更加广泛,为人类健康事业作出更大贡献。
过硫酸钾
11 计算化学数据 编辑本段
1、疏水参数计算参考值(XlogP):无
2、氢键供体数量:0
3、氢键受体数量:8
4、可旋转化学键数量:1
5、互变异构体数量:无
6、拓扑分子极性表面积(TPSA):150
7、重原子数量:12
8、表面电荷:0
9、复杂度:206
10、同位素原子数量:0
11、确定原子立构中心数量:0
12、不确定原子立构中心数量:0
13、确定化学键立构中心数量:0
14、不确定化学键立构中心数量:0
15、共价键单元数量:3
12 生态学数据 编辑本段
1.生态毒性 暂无资料
过硫酸钾
2 基本信息 编辑本段
中文名称:过硫酸钾
英文名称:Potassium persulfate
中文别名:过氧化二硫酸钾;高硫酸钾;过二硫酸钾;过(二)硫酸甲;过(二)硫酸钾;二硫八氧酸钾;连二硫酸钾
英文别名:Potassium peroxydisulfate; Potassium persulfate 99+ % for analysis; Potassium peroxodisulfate; dipotassium peroxodisulphate; Potassium persulphate; Peroxydisulphuric acid dipotassium salt~Potassium peroxydisulphate; DI-POTASSIUM PEROXODISULPHATE; DIPOTASSIUM PEROXYDISULFATE; BETZ 2701; TNP-201 DECOMPOSITION SOLUTION 1; anthion; dipotassiumpersulfate; peroxydisulfuricacid([(ho)s(o)2]2o2),dipotassiumsalt; Peroxydisulfuricacid,dipotassiumsalt; dipotassium [(sulfonatoperoxy)sulfonyl]oxidanide
脱氧胆酸钠溶液(1%)
北京雷根生物技术有限公司
脱氧胆酸钠溶液(1%)
简介:
脱氧胆酸钠(Sodium deoxycholate)又称去氧胆酸钠, 分子量为414.55,CAS 号为302-95-4,是常用生物学试剂。
脱氧胆酸钠属于离子型去污剂,可用于裂解细胞和溶解难溶于水的蛋白质。
亦可用于胆汁溶菌实验其原理是胆汁或胆盐具有表面活性,可快速激活自溶酶,加速了肺炎链球菌等细菌的自身溶解。
琼脂平板法以菌落消失为阳性。
试管法以加入胆盐的培养物变澄清,而对照管浑浊为阳性。
肺炎链球菌该实验呈阳性,其他α溶血球菌(如草绿色链球菌)呈阴性。
组成:
操作步骤(仅供参考):
1、 按实验具体要求操作。
注意事项:
1、 如果每次的使用量很小,可以适当分装后再使用。
2、 为了您的安全和健康,请穿实验服并戴一次性手套操作。
有效期: 6个月有效。
相关:
编号 名称 DZ0246 Storage 脱氧胆酸钠溶液(1%) 100ml 4℃ 使用说明书 1份 编号 名称 DC0032 Masson 三色染色液 DF0111 中性福尔马林固定液(10%) DH0006
苏木素伊红(HE)染色液 IH0305
柠檬酸钠抗原修复液(50×) NR0001
DEPC 处理水(0.1%) PW0040
Western blot 一抗稀释液 TC1243 甘油三脂(TG)检测试剂盒(GPO-PAP 单试剂比色法)。
硼氢化钾的cas号
硼氢化钾的cas号
硼氢化钾是一种常用的还原剂,其化学式为KBH4。
其英文名称为Potassium borohydride,CAS号为13762-51-1。
硼氢化钾是一种白色晶体固体,可以在水中溶解,并且具有较强的还原性。
硼氢化钾在有机合成中被广泛使用,可以用于还原醛、酮、酸和酯等化合物。
同时,硼氢化钾还可以用于制备含烷基的硼氢化物,这些物质在有机合成中也有着广泛的应用。
硼氢化钾的CAS号为13762-51-1,是化学品的唯一标识符号。
CAS号由化学品抽象服务(CAS)分配,是一种有全球公认的化学品标识符。
CAS号可用于识别化合物,在化学品的生产、贸易、储存和使用过程中都有着重要的作用。
在购买硼氢化钾时,需要注意化学品的CAS号,以确保购买到正确的化学品。
同时,在使用硼氢化钾时,需要注意其强烈的还原性,应当采取相应的安全措施,避免意外发生。
总之,硼氢化钾是一种重要的有机合成试剂,其CAS号为13762-51-1。
在使用硼氢化钾时,需要注意其安全性,并遵循相关的操作规程。
- 1 -。
sodium persulfate 英文缩写
Sodium Persulfate 英文缩写1. 介绍Sodium Persulfate是一种无机化合物,化学式为Na2S2O8,英文缩写为SPS。
它是一种白色结晶性粉末,可溶于水,在空气中能稳定存在。
Sodium Persulfate具有氧化性较强的特性,因此在化工、医药、电子等领域有着广泛的应用。
2. 物理性质Sodium Persulfate的分子量为238.15 g/mol,密度为2.46 g/cm³。
它在室温下为无色结晶,易溶于水,而在乙醇中溶解度较小。
在高温下,Sodium Persulfate能分解排放出氧气。
3. 化学性质Sodium Persulfate具有较强的氧化性,可与其他物质发生化学反应。
它在水溶液中能够分解生成自由基,因此在聚合反应和环氧树脂固化中有着重要的作用。
Sodium Persulfate还可以用作氧化剂、漂白剂等。
在医药领域,它常被用于制备抗体和药物。
4. 应用领域Sodium Persulfate在化工领域中广泛应用于聚合反应、表面处理、印刷电路板的蚀刻等工艺中。
它也被用作金属表面的氧化剂,在电子行业中常见。
在环氧树脂的固化过程中,Sodium Persulfate可作为引发剂使用,加速固化反应。
Sodium Persulfate还可用于污水处理中的氧化还原反应。
5. 安全性Sodium Persulfate具有一定的腐蚀性和刺激性,接触皮肤和眼睛会引起灼伤。
在使用过程中应注意其安全操作,避免吸入粉尘和接触皮肤。
另外,Sodium Persulfate在燃烧时会释放有毒的气体,所以应远离火源,存放在阴凉干燥处。
6. 结语Sodium Persulfate作为一种重要的化工原料,在多个行业中都有着重要的应用价值。
但由于其氧化性和腐蚀性较强,使用过程中需要注意安全,合理使用并妥善存放。
希望未来能有更多的研究和发展,为其应用提供更多可能性。
3. 化学性质的扩展除了在化工领域中应用广泛外,Sodium Persulfate还在其他领域发挥重要作用。
磷酸特地唑胺产品说明
450.32
Bacterial
Anti-infection
项目 Test
外观 Appearance
纯度 Purity
溶解性 Solubility
保存/复检期 Storage/Recommended Retest Period
检测指标 Specification White to off-white (Solid)
北京索莱宝科技有限公司磷酸特地唑胺产品说明产品编号tcatnumberit0410产品名称tproductname磷酸特地唑胺tedizolidphosphate产品类型tproducttype小分子抑制剂smallmoleculeinhibitorscas
磷酸特地唑胺产品说明
北京索莱宝科技有限公司
产品编号 Cat Number 产品名称 Product Name 产品类型 Product Type
CAS.
分子式 Molecular Formula 分子量 Molecular Wt
靶点 Target
通路 Pathway
IT0410 磷酸特地唑胺 Tedizolid phosphate 小分子抑制剂 Small molecule inhibitors 856867-55-5
Purityห้องสมุดไป่ตู้98%
Soluble in DMSO Powder 4℃ 2 years In solvent -20℃ 1 month
注意:我司生产的小分子抑制剂均为非无菌包装,若用于细胞实验,请提前做好预处理。
中国地质科学院矿物数据库-磷酸盐砷酸盐钒酸盐712种
晶系 等轴晶 系 三斜晶 系 等轴晶 系 单斜晶 系 单斜晶 系 三斜晶 系
空间群 A0 Ia3d P① P21/n C2/m P1 12.38
三斜磷钙铁矿 Anapaite 羟砷铋石 磷铝钠石 含镁的镍华 磷铁矾 磷钍铝石 水红砷锌石 板磷铁矿 磷铁钠矿 水磷铍石 羟钒铁铅石 羟砷锌石 砷钙镁石 块砷镍矿 砷钇铜石 球砷锰石 斜羟砷锰石 钾砷铀云母 磷锰钠石 羟磷镁石 Arsenobismite Brazilianite Cabrerite Diadochite Eylettersite Koettigite Ludlamite Maricite Moraesite Mounanaite Adamite Adelite Aerugite Agardite-(Y) Akrochordite Allactite Abernathyite Alluaudite Althausite
三斜晶 系 三斜晶 系 单斜晶 系 四方晶 系 单斜晶 系 单斜晶 系 斜方晶 系 单斜晶 系 四方晶 系 斜方晶 系 单斜晶 系 单斜晶 系 单斜晶 系 斜方晶 系 单斜晶 系 四方晶 系 斜方晶 系 四方晶 系 单斜晶 系 单斜晶 系 四方晶 系 单斜晶 系 单斜晶 系 单斜晶 系 六方晶 系
P① P① C2/m I④2d P21/m A2/a
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
簇磷铁矿 块磷铝矿 板磷锰矿 磷铝钙锂石 磷钠铍石 磷铁锰矿 磷铵石 磷铝锰钡石 白磷镁石 氟磷钠锶石 隐磷铝石 磷钙钍石 水钒锰铅矿 砷锰钙石 水砷镁石 磷镁钙钠石 铈硅磷灰石 钇硅磷灰石 水磷钙钍石 透磷钙石 羟砷铁矾 磷铝铁钠矿 黄磷铁矿 砷钛铁钙石 水磷钙铁石
过硼酸钠
过硼酸钠(四水)产品编号18318别名四水合高硼酸钠英文名 Sodium perborate tetrahydrateCAS# 7632-04-4危险货物编号按《危险货物品名表》属氧化剂,编号51505。
分子式NaBO3•4H2O分子量153.86分子式:NaBO3.4(H2O)分子量:153.86CAS号:10486-00-7性质:熔点60°C。
水溶性21.5 g/L (18°C)。
白色结晶性粉末。
无气味。
有盐味。
对湿敏感。
在冷燥处稳定,但在热的潮湿空气中能游离出氧气,在60℃以上分解。
溶于约40份水,水溶液呈碱性,并分解成过氧化氢和氧气。
有酸存在时生成过氧化氢。
水溶液的pH10~10.3,有效氧为10%。
有氧化性。
与有机物摩擦或撞击能引起燃烧。
织物漂白。
清净剂。
电镀。
杀菌剂。
普通用的缓和碱性氧化剂。
本品应密封于阴凉干燥处保存。
规格化学纯含量99.0%~102.0%。
CAS: 10332-33-9化学品中文名Chinese_Name 一水高硼酸钠中文别名Chinese_Synonyms 高硼酸钠(一水);过硼酸钠(一水);一水合过硼酸钠;一水高硼酸钠;一水过硼酸钠;过硼酸钠单水合物化学品英文名English_Name Sodium perborate monohydrate英文别名English_Synonyms perboric;perboricacid,sodiumsalt,;sodiumborate,monohydrate;SODIUM PERBORATE MONOHYDRATE;Perboric acid sodium salt monohydrate;Perboric acid (HBO(O2)), sodium salt, monohydrate;DISODIUMPERBORATEMONOHYDRATE;Natriumperborat分子式Formula BH2NaO4分子结构Molecular_Structuremol file分子量MW 99.81。
治疗胆结石新药牛磺熊去氧胆酸胶囊————滔罗特PPT课件
与血浆蛋白结合, 与血浆蛋白结合, 摄取缓慢, 摄取慢, 肝脏内结合 肝脏内结合 62% 完全溶解 小肠、结肠 被动吸收 70% 微酸环境下 部分不可溶 小肠、结肠 被动吸收
结论:TUDCA生物利用度更高,起效更迅速
TUDCA作用更快
TUDCA通过与牛磺酸结合,比UDCA更快地被转运和分泌入肝脏和胆汁中。
在肠肝循环中的主要存在形式: 甘氨熊去氧胆酸 >90% (GUDCA) 牛磺熊去氧胆酸 (TUDCA)
使脱氧胆酸(疏水)形成增加 使石胆酸(疏水)浓度增加
亲水性: GUDCA<TUDCA 肝脏利用率低:小于70% 加速结石钙化,导致溶石无效
牛磺熊去氧胆酸(TUDCA)
为熊去氧胆酸与牛磺酸的共轭体,其亲 水性较UDCA更强。 作为最新的第三代口服胆汁酸,较UDCA 溶石速度更快,全部溶解率提高,安全 性更好。
稳定线粒体外膜的脂质和蛋白质结构 通过对细胞信号途径p38MAPK、ERK1/2MAPK、和PI3K的抑 制进行
保护肝细胞,改善肝功能
抗肝细胞纤维化
明显降低血清透明质酸(HA),层粘连蛋白(LN),降低肝羟脯氨酸 和Ⅰ、Ⅲ型前胶原含量 抑制TGF-β1 及TNF-α 的表达
促进肝细胞再生和肝脏的组织形态学改变
增加胆汁酸的亲水性转 化,降低其毒性 抑制肝肠循环中疏水性 的胆汁酸,减少其分泌 和重吸收
保护肝细胞,改善肝功能
降低血清胆红素
增加胆管上皮的胆汁转运蛋白,降低胆红素
TUDCA增加
保护肝细胞,改善肝功能
抗细胞凋亡
TUDCA
牛磺熊去氧胆酸 (TUDCA)
调节线粒体途径 盐皮质激素受体 (MR) 糖皮质激素受体 (GR)
陶氏它诺
“陶氏它诺“名称使用归美国陶氏化学公司
(US DOW CHEMICAL COMPANY)
含量≥98%,粉白色,PH值:弱酸性。
陶氏它诺(代标:013)为天然高活性非激素类植物生根、抗逆激力素。
能够迅速渗透到植物体内,促进细胞的原生质流动、加快植物发根速度,茎伸长,叶片扩大,单性结实,果实生长,打破种子休眠,助力膨果,在农、林,园艺上使用极为广泛;添加在水溶肥、有机肥、复合肥、掺混肥里,效果最佳。
其功能与吲哚丁酸钾类似,明显的对比优势在于①纯天然非激素类物质。
②PH值5-7,适用范围广泛,可作为大多数肥料填充使用,不会降低肥效。
③适用作物广泛,安全。
使用方法:
1.加水稀释4000-5000倍浸种。
2.每亩地水溶肥里添加10-20克冲施。
3.每亩地的肥料里添加20克底施。
包装规格:1000克/袋,15袋/箱。
有效成分含量≥98%。