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存贮条件 密封阴凉干燥保存。 折光率 1.2850 沸点 71.8°C 熔点 -15.4°C 密度 1.4890 描述
产品介绍 有辛辣气味。有吸湿性。能发烟。是一种强烈而非氧化性的酸。能与乙醚、丙酮、乙醇、苯、四氯化碳和己烷混溶。有毒，半数致死量(小鼠，静脉)1200mg/kg。有腐蚀性。 用途 三氟乙酰化试剂，聚合反应催化剂。与液体二氧化硫混和用以溶解蛋白质。分光光度分析。蛋白质顺序分析。 在反相色谱分离多肽和蛋白质的实验中，使用三氟乙酸 (TFA) 作为离子对试剂是常见的手段。流动相中的三氟乙酸通过与疏水键合相和残留的极性表面以多种模式相互作用，来改善峰形、克服峰展宽和拖尾问题。 三氟乙酸优于其他离子修饰剂的原因是它容易挥发，可以方便地从制备样品中除去。另一方面，三氟乙酸的紫外最大吸收峰低于 200nm ，对多肽在低波长处的检测干扰很小。 三氟乙酸(TFA)是许多有机化合物的良好溶剂，如与二硫化碳合用，可溶解蛋白质。它也是有机反应的优良溶剂，可获得在一般溶剂中难以获得的结果，例如喹啉在一般溶剂中催化氢化时，吡啶环优先氢化，但在三氟乙酸中苯环优先氢化。三氟乙酸在苯胺存在下分解成氟仿和二氧化碳。 包装 T103291-2.5kg in glass bottle
T103291-100g,T103291-500g in injection bottle - 安全信息
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标识符号 
GHS05,
GHS07
信号词 Danger 危害声明 H314,H332,H412 警示性声明 P273,P280,P305+P351+P338,P310 个人防护设备 Faceshields,full-face respirator (US),Gloves,Goggles,multi-purpose combination respirator cartridge (US),type ABEK (EN14387) respirator filter 危害码(欧洲) C 风险声明 (欧洲) R20;R35;R52/53 安全声明(欧洲) S9;S26;S27;S45;S61;S28A WGK德国 2 RTECS AJ9625000 UN代码 2699 是否危化品 一般危险品 - 参考文献
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We have developed an approach that enables nonradioactive, ultrasensitive (attamole sensitivity) site-specific protein-protein photocrosslinking, and we have applied the approach to the analysis of in...Read MoreThe low density lipoprotein receptor-related protein 1 (LRP1) mediates internalization of a large number of proteins and protein-lipid complexes and is widely implicated in Alzheimer's disease. T...Read MoreThe biodegradation of five pharmaceutical ingredients (PIs) of different therapeutic classes, namely antibiotics (trimethoprim, sulfametoxazole and ciprofloxacin), anti-inflammatory (diclofenac) and a...Read MoreHuperzine A (HupA) and Huperzine B (HupB) are natural alkaloids existed in Lycopodium plants. They both have potential clinical application for treating Alzheimer's Disease (AD). For the purpose ...Read MoreWe're sorry this abstract is currently not available....Read MoreAcid brings the oxygen: a general method for palladium-catalyzed C-H oxygenation has been developed for the facile synthesis of a wide range of functionalized phenols with readily available aryl keton...Read MoreA high-yielding total asymmetric synthesis of (-)-martinellic acid is reported. The conjugate addition of lithium (R)-N-allyl-N-(α-methyl-4-methoxybenzyl)amide to tert-butyl (E)-3-[2'-(N,N-diall...Read MoreThe membrane-permeant fluorogenic biarsenicals FlAsH-EDT(2) and ReAsH-EDT(2) can be prepared in good yields by a straightforward two-step procedure from the inexpensive precursor dyes fluorescein and ...Read MoreThe cycloannulation of β-oxodithioesters and tryptamine in dichloromethane in the presence of a catalytic amount of InCl3 and TFA gave the novel 5-aryl/heteroaryl 2a(1),9b-dihydro-1H-2a,5a-diaza-cycl...Read MoreA powerful, new reagent, an amidinate salt of hexafluoroacetone hydrate, is an air-stable salt that can be used for the preparation of fluorinated organic molecules. Nucleophilic trifluoromethylation ...Read MoreCyanophycin (multi-l-arginyl-poly-l-aspartic acid; also known as cyanophycin grana peptide [CGP]) is a putative precursor for numerous biodegradable technically used chemicals. Therefore, the biosynth...Read MoreThe present study investigates the suitability of direct bacterial profiling as a tool for the identification and subtyping of pathogenic Neisseria. The genus Neisseria includes two human pathogens, N...Read MoreStaphylococcus aureus is a major cause of mastitis in ruminants. In ewe mastitis, symptoms range from subclinical to gangrenous mastitis. S. aureus factors or host-factors contributing to the differen...Read MoreZinc-binding groups (ZBGs) are exhaustively applied in the development of the new inhibitors against a wide variety of physiologically and pathologically important zinc proteases. Here the @a-nitro ke...Read MoreBorreliae employ multiple immune evasive strategies such as binding to complement regulatory proteins [factor H (fH) and factor H like-1 (FHL1)], differential regulation of surface membrane proteins, ...Read MoreCommercially available protein reference standard materials are widely used for the quantitation of intact proteins in biopharmaceuticals, food, and consumer products. However, the purity of protein r...Read MoreFully substituted glucomannan triacetate (GMTAc) (degree of substitution (DS)=3.0) was prepared from konjac glucomannan (KGM) treated with acetic acid and trifluoroacetic anhydride (TFAA). The peaks i...Read MoreA transition-metal-free synthetic method has been developed for the synthesis of unsymmetrical diaryl chalcogenides (S, Se, and Te) from diaryl dichalcogenides and arenes under oxidative conditions by...Read MoreLC-ESI/MS/MS-based shotgun proteomics is currently the most commonly used approach for the identification and quantification of proteins in large-scale studies of biomarker discovery. In the past seve...Read MoreA novel method for cleaving from resin and removing acid-labile protecting groups for the Fmoc solid-phase peptide synthesis is described. 0.1 N HCl in hexafluoroisopropanol or trifluoroethanol cleanl...Read MoreSulfonated molecules exhibit high water solubility, a property that is valuable for many biological applications but often complicates their synthesis and purification. Here we report a sulfonate prot...Read MoreThe stereochemical course of the amidopalladation of alkenes has important implications for the development of enantioselective Pd-catalyzed "Wacker-type" oxidative amidation of alkenes. We ...Read MoreA reversed-phase high-performance liquid chromatography (RP-HPLC) method was developed for the simultaneous determination of nine food additives, i.e., acesulfame, saccharin, caffeine, aspartame, benz...Read MoreBenzoylation of methyl and benzyl glycopyranosides by benzoic anhydride in acetonitrile in the presence of copper(II) trifluoroacetate as a promoter has given monobenzoates with a good yield and high ...Read MoreFast and easy identification of fungal phytopathogens is of great importance in agriculture. In this context, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS...Read MoreFor the first time, aluminium fluorides in liquid phase are available for optical applications. By modifying the conditions of the fluorolytic sol-gel synthesis of aluminium fluorides transparent sols...Read MoreThis study aimed to develop and validate a stability indicating LC for the determination of 5-(2-benzoylethenyl)-N-benzyl-2 methoxybenzenesulfonamide (SCD - a synthetic chalcone derivative), and evalu...Read MoreWe investigate the hydration state of horse-heart cytochrome c (hh cyt c) in the unfolding process induced by trifluoroacetic acid (TFA). The conformation of hh cyt c changes from the native (N) state...Read MoreThe dynamics of string growth was studied in model homochiral solutions of biomimetics, trifluoroacetylated amino alcohols (TFAAA) in heptane, water, and inverted heptane-water emulsion. In heptane an...Read MoreRecent studies have shown that Pd(DMSO)(2)(TFA)(2) (TFA = trifluoroacetate) is an effective catalyst for a number of different aerobic oxidation reactions. Here, we provide insights into the coordinat...Read MoreA bottleneck in crosstalk and QC research has been the quantification of diverse chemotypes in small amounts of tissue. An LC-UV method for estimating 28 selected metabolites of the regulatory network...Read MoreIn bioanalysis, phospholipids may affect the precision and accuracy of LC-MS/MS methods and compromise the quality of the results, especially when samples in complex biomatrices are extracted by prote...Read MoreDespite advances in mass spectrometry (MS)-based identification, effective phosphopeptide enrichment is a prerequisite towards comprehensive phosphoproteomic analysis. Based on the different binding a...Read MorePolysulfides [poly(1,2-alkylene sulfides)] are oxidation-responsive polymers that are finding application in drug release and biomaterials. The precise knowledge of their macromolecular characteristic...Read MorePhenyl-ended hyperbranched carbosilane (HBC) is synthesized and immobilized onto the inner wall of a fused silica capillary column using a sol-gel process. The hybrid coating layer formed is used as a...Read More - 相关文档
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