Browse Sigma-Aldrichs Derivatization Reagents TLC to find products in Chromogenic & Charring agents (general), Fluorescent agents (general), Sprays, TLC Reagents, TLC Visualization (Staining) Reagents (alphabetic sort), TLC Visualization (Staining) Reagents (by application)
New, simple and cost effective spectrophotometric methods have been developed for the quality assessment of isoniazid (INH), in bulk and in pharmaceutical formulations by using novel reagents. The proposed methods involve the utility of ethyl 2-[(E)-(4-hydroxyphenyl) diazenyl]-3-oxobutanoate and benzil as novel reagents for the determination of INH. Developed methods are based on the condensation reaction of INH with reagents to give orange colored chromogen with an absorption band at 454 nm (for method A) and 436 nm (for method B). The applicability of these methods is demonstrated by the determination of the studied drug in commercial tablets and the results are statistically evaluated. The new procedures described in this paper are fast, convenient and have the novelty of carrying out the quantitative determination of INH in pure and in pharmaceutical formulation.
ChemPep supplies custom peptides, catalog peptides, generic peptides, cosmetic peptides, antibodies, Fmoc amino acids, Boc amino acids, Cbz amino acids, unusual amino acids, solid phase resins, linkers, peptide coupling reagents, N-protecting reagents; specializing in custom peptide synthesis.
ChemPep supplies custom peptides, catalog peptides, generic peptides, cosmetic peptides, antibodies, Fmoc amino acids, Boc amino acids, Cbz amino acids, unusual amino acids, solid phase resins, linkers, peptide coupling reagents, N-protecting reagents; specializing in custom peptide synthesis.
Abstract. The coupling reagent ethyl 2-cyano-2-(2-nitrobenzenesulfonyloxyimino)acetate (o-NosylOXY) produces only byproducts that can be easily recovered and reused for the synthesis of the same reagent, making coupling reactions to yield amides, hydroxamates, peptides, and esters more environmentally friendly and cost-effective.. ...
The Novabiochem® brand offers one of the most extensive ranges of high-quality coupling reagents for in situ activation on the market.
[[{type:media,view_mode:media_original,fid:4287,attributes:{alt:,class:media-image,typeof:foaf:Image}}]] We have improved the detection reagents used in our FluoroSpot assays. As of January 2, 2018, the new detection reagents are included in our FluoroSpot kits. The implemented changes only involve the tag/anti-tag reagents and do not affect the monoclonal antibodies or the biotin/streptavidin detection system.
Many chemicals are subject to strict legal stipulations.. Our offer is not directed toward consumers within the meaning of Section 13 of the German Civil Code (BGB), but exclusively toward companies (Section 14 of the German Civil Code), legal entities under public law or public-law special funds. Our products - insofar as a deviating agreement has not been reached - may not be used in unprocessed form as additives for foodstuffs or animal feed, medications for humans or animals, cosmetics or for in-vivo diagnostics purposes.. Notice: Your complete company data is required for purchasing chemicals. All new or additionally added addresses are initially examined by order processing. Please note that country-specific export restrictions apply to some products. ...
Chromatographic Specialties Inc. is a Canadian distributor of innovative chromatography products. We offer products for GC, HPLC, sample preparation, reference standards, instrumentation, and more. ...
Principal Investigator:OHRUI Hiroshi, Project Period (FY):1998 - 2000, Research Category:Grant-in-Aid for Scientific Research (B)., Section:一般, Research Field:Bioproduction chemistry/Bioorganic chemistry
A free platform for explaining your research in plain language, and managing how you communicate around it - so you can understand how best to increase its impact.
In recent years, amide coupling has become the most frequently used reaction in medicinal chemistry. However there are numerous reagents available.
Early buyers will receive 10% customization on reports.. This report studies the global chromatography reagents market for the forecast period of 2015 to 2020. This market is expected to reach USD 6.310 Billion by 2020 from USD 4.477 Billion in 2015, at a CAGR of 7.1%.. The global chromatography reagents market is segmented on the basis of types of reagents, applications, and regions.. Based on types, the chromatography reagents market is categorized into solvents, buffers, derivatization reagents, and ion pair reagents. In 2015, the solvents segment is estimated to account for the larger share of the chromatography reagents market.. Based on applications, the market is segmented into life sciences, environmental testing, food and beverage testing, and other application areas such as research, forensics, as a diagnostic tool, and applications in cosmetics, chemicals, oil, and petrochemical industries. Other application areas are expected to account for the largest share of the chromatography ...
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Gentaur molecular products has all kinds of products like :search , Arbor \ GST Detection Reagent \ C035-1EA for more molecular products just contact us
All reagents should be stored refrigerated (2-8°C). Return all reagents to 2-8°C promptly after use. Unopened reagents can be used for one year from the date of manufacture, as indicated by the expiration date on the package and bottle labels. Opened reagents can be used for one month if stored at 2-8°C ...
A multizone test device for the determination of analyte from a liquid test medium upon contact with the liquid test medium and a labeled reagent comprising a chemical group having a detectable chemical property. The test device preferably comprises multilayers including a reagent layer incorporated with an immobilized reagent and a detection layer incorporated with an immobilized form of an interactive detection reagent for the labeled reagent. The immobilized reagent in the reagent layer and the labeled reagent comprise specific binding partners which will bind to each other dependent upon the amount of analyte present. Labeled reagent which does not become bound to the immobilized reagent in the reagent layer migrates into the detection layer and interacts with the immobilized interactive detection reagent therein which results in the localized generation of a detectable reaction product which preferably is also immobilized in the detection zone. As a result, reverse migration of the labeled reagent,
All reagents should be stored refrigerated (2-8°C). Return all reagents to 2-8°C promptly after use. Unopened reagents can be used for one year from the date of manufacture, as indicated by the expiration date on the package and bottle labels. Opened reagents can be used for one month if stored at 2-8°C ...
WE ARE A DISTRIBUTING PARTNER OF ScreenFect - InCella ScreenFect® transfection reagents can efficiently transfect a variety of cells with minimal cytoxicit...
The Simons reagent actually consists of two reagents in two, separate bottles, marked A and B. Bottle A has a yellow label, and bottle B has a green label.. IMPORTANT: This test is to be used only after you have first received a positive result with Mandelin, Mecke or Marquis reagent. It should never be used alone. Always use one of the other reagents first to identify the presence of a particular set of substances Only afterwards should you use this test.. IMPORTANT: Never have more than one reagent bottle open at a time. If you mix up the caps and put the wrong cap on the wrong reagent bottle, this may cross-contaminate the reagents and ruin them. Be sure to perform the tests in a well-lit location.. ...
A heterogeneous specific binding assay method for determining the amount of a suspected analyte in an aqueous test medium wherein a reaction mixture is formed by combining the test medium with assay reagents including a labeled reagent, an immobilizable component, and a binding substance which causes the immobilizable component to precipitate. Free and bound species of the labeled reagent are formed as a function of the amount of the analyte in the test medium. One of the free and bound species of the labeled reagent is immobilized by binding of the immobilizable component with the binding substance. The immobilized labeled reagent is seperated from labeled reagent which has not been immobilized, and the amount of label in the labeled reagent in one of the separated fractions is determined and related to the amount of analyte in the test medium. The improvement provided is the use of an immobilizable component comprising a water dispersible, aggregatable reagent comprising a binding partner for the one
PCR. The USB line of PCR reagents includes a range of tools for robust and accurate PCR applications. ExoSAP-IT for PCR product cleanup is a unique, single-step, enzymatic cleanup that efficiently removes primers and dNTPs prior to DNA sequencing. USB HotStart-IT products provide consistent results at an unmatched value. A variety of other reagents are available for real-time, endpoint, and long and accurate PCR.. Key applications include:. ...
Improved volatility, better thermal stability or a lower limit of detection in gas chromatography with GC derivatization reagents from MACHEREY-NAGEL.
Buy Boc-Ala(3-pyridyl)-OH (CAS 117142-26-4) from P3 Biosystems, a US supplier of Alanine (Ala), Unusual Amino Acids, Amino Acids, Protected Amino Acids, Peptide Coupling Reagents, Solid Phase Synthesis Resins and Peptides
Buy H-D-Phe(3-Cl)-OH (CAS 80126-52-9) from P3 Biosystems, a US supplier of Phenylalanine (Phe), Unusual Amino Acids, Amino Acids, Protected Amino Acids, Peptide Coupling Reagents, Solid Phase Synthesis Resins and Peptides
Modern chemical protocols require a variety of protecting groups, coupling reagents, solvents, linkers for solid phase organic and peptide chemistry.
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In article ,199609231357.JAA11376 at mail.med.cornell.edu,, mf at aol.com (W) wrote: #hey netters: # Ive been working on a method to isolate proteins comprising a putative #complex using an antibody to a single known protein in the complex. Ive #prepared polyclonal antibodies to the target protein, then Ive affinity #purified these antibodies and coupled them to a protein A bed (using DMP #as a covalent coupling reagent). Then Ive taken extracts from appropriate #cells that we have previously shown express the target protein and passed #them across the bed to isolate the complex. At this point things have #gotten a little difficult. Eluates from the column have shown by western #that there is a very low yield of the target protein; moreover, when Ive #taken a small amount of the bed matrix and boiled in SDS-PAGE sample #buffer, I get the target protein in expected amounts. Taken together Ive #interpreted this data as an indication that the elution conditions Im #using (0.2N Acetic acid, ...
Our salts for analysis are manufactured under strict production guidelines. Analytical purity and best quality reliably characterize each batch. Salts in p.a. quality made by Carl ROTH meet the high requirements for reproducible results. Most of our salts are additionally specified according to international standards like ACS and ISO. ...
The Centre for AIDS Reagents (CFAR) is a non-for-profit reagent repository based at the National Institute for Biological Standards and Control (NIBSC). Our mission is to acquire, archive and disseminate valuable reagents to support HIV research. Reagents are obtained through generous donations from scientists, participation in EU-funded consortia, partnerships with private companies, and our collaboration with the NIH AIDS Reagent Program. Through this network, we hope to facilitate advancement in HIV research and encourage wider networking and knowledge sharing. ...
Reagents. Details of primary and secondary antibodies used in this study are shown in Supplemental Table 1. DHE was from Invitrogen. The SCP and Nox2tat ([H]-RKKRRQRRRCSTRVRRQL-[NH2]) were provided by PeptideSynthetics (Peptide Protein Research Ltd.). All other reagents and chemicals were from Sigma-Aldrich unless otherwise stated. Animals. Nox2KO mice on a C57BL/6J background were originally obtained from the Jackson Laboratory. Nox2KO mice lack phagocyte superoxide production and manifest an increased susceptibility to infection. Littermates of WT and Nox2KO mice were bred at the University of Surrey from heterozygotes and genotyped. Animals were housed under standard conditions with a 12-hour-light/12-hour dark cycle, and food and water were available ad libitum. Male mice were randomly grouped (n = 10-12/per group) and used at young age (3-4 months), middle age (11-12 months), and old age (20-22 months) for the experiments. Endothelial cell-specific expression (under the murine Tie2 ...
The paper was one of four published by my lab in early May in Science. Collectively, these papers, along with one in June 1984 in Lancet, convinced the scientific community that HIV (then called HTLV-III) was the cause of AIDS. We described the technique and results of the HIV blood test as well as made available HIV-producing cell lines, and other reagents for the global scientific community.. Our paper in Science described frequent detection and short term culture of HIV from 48 patients with AIDS or in people with conditions defined by CDC as at great risk for AIDS; no virus was detected in blood cells obtained from 115 healthy heterosexuals. Because of the great difficulties in isolating HIV at the time, due to the low number of T cells in blood of AIDS patients and the very limited number of virologists accustomed to culturing human T cells with interleukin-2 (IL-2), I believed verification would be painfully slow. Consequently, my colleagues and I realized that a safe, simple, sensitive ...
HsGAD67 ChIP primer (Forward) DNA RNA and cDNA datasheet (ab83614). Abcam offers quality products including antibodies, assays and other reagents.
Ion-pairing chromatography has traditionally been implemented with the addition of an ion-pairing reagent into the mobile phase. Here, an alternative method is presented, in which the ion-pairing reagent is deposited on column as a sample additive instead of in the mobile phase.
CE and FDA Approved David HCG Pregnancy Test Kit with Wholesale Price(id:11045344). ce europe detection reagent tester igg igm rapid test kit COVID-19 Rapid Test Kit / Test Covid / COVID 19 IgG/IgM / Conavirus Kit Developed-in-just-six-weeks. ce europe detection reagent tester igg igm rapid test kit drug of abuse detection, rapid diagnosis of infectious diseases and tumor detection. Because of excellent quality, such as good reproducibility and ce europe detection reagent tester igg igm rapid test kit. ...
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216 S11-E2 Page 2 Name Key I. (9 points) Answer in the boxes below the following questions for the Grignard reagent C 3 -Mg. (1) (2 points) Is the carbon atom associated with magnesium electrophilic or
Grignard Reagents Market: Pharmaceutical Industry to Remain the Dominating End User Segment Throughout the Forecast Period: NAFTA and Europe Industry Analysis and Opportunity Assessment, 2016 - 2026
Organolithium reagents are organometallic compounds that contain carbon - lithium bonds. They are important reagents in organic synthesis, and are frequently used to transfer the organic group or the lithium atom to the substrates in synthetic steps, through nucleophilic addition or simple deprotonation. Organolithium reagents are used in industry as an initiator for anionic polymerization, which leads to the production of various elastomers. They have also been applied in asymmetric synthesis in the pharmaceutical industry. Due to the large difference in electronegativity between the carbon atom and the lithium atom, the C-Li bond is highly ionic. This extremely polar nature of the C-Li bond makes organolithium reagents good nucleophiles and strong bases. For laboratory organic synthesis, many organolithium reagents are commercially available in solution form. These reagents are highly reactive, and are sometimes pyrophoric. Studies of organolithium reagents began in the 1930 and were pioneered ...
COVID-19 antigen rapid detection reagent Chinese manufacturer GYF from Brand:gyf;Model:COVID-19-jiuxiang;specification:50pcs/box; Certification:ce; Certification:fda; Certification:cfda; accuracy:98%;
Samples containing unknown levels of analytes are incubated with the antibody-coated MACSPlex Capture Beads, and analytes bind to the specific antibody. Two detection reagents, composed of a cocktail of either biotin-conjugated or APC-conjugated antibodies specific for the analytes, are added. Consequently, sandwich complexes are formed between the MACSPlex Capture Beads, the analyte and the Detection Reagent Biotin while the Detection Reagent APC binds to the biotinylated detection antibodies. These complexes can be analyzed based on the fluorescence characteristics. Standards of known quantities of given analytes are provided with the kit and are used for the quantification of the analytes within the unknown samples ...
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With its low-profile support, Corning filtration systems deliver the lowest hold-up volume of any major brand to reduce the loss of valuable media and other reagents.. With its low-profile support, Corning filtration systems deliver the lowest hold-up volume of any major brand to reduce the loss of valuable media and other reagents.. Learn More ...
As part of our complete cell culture offering, Cornings comprehensive line of standard and custom media helps create an optimal environment for all stages of cell culture growth and scaling. Our broad selection of vessels, surfaces, and media support your research, development, and production needs.. Corning® sera products can help enhance your cell culture research with additions such as bovine serum albumin (BVA), hormones, growth factors, enzymes, lipids, trace elements, minerals, and nutrients. Our sera products are held to the highest level of sterility - all while meeting strict specifications for endotoxins, residual hemoglobin concentration, pH, and microbiological quality.. To achieve successful growth and consistency, media often requires nutrients, supplements, and other reagents specific to the application and cell type. Whether derived from plants or animals, or used for growing microorganisms, such as bacteria or yeast, our comprehensive line of supplements and reagents can help ...
Ong, Quyen, Hameyer, Helge, Handa, Sheetal and Jones, Keith (2001) Synthetic studies on morphine-based analgesics: an approach to angular substitution in 4a-aryldecahydroisoquinolines via dienolate chemistry. Tetrahedron Letters, 42(44), pp. 7879-7882. ISSN (print) 0040-4039 ...
Histofine® primary antibodies and ancillary reagents are developed by Nichirei Biosciences Inc. These primary antibodies designed to stain human tissue sections are compatible with FFPE tissue sections and used for histopathological analysis. Pretreatment methods and dilutions indicated in this catalog are recommended staining conditions using the Histofine® Simple Stain™ MAX PO (MULTI) detection reagent. For other detection reagents, optimization of staining conditions is recommended.. ...
A wide range of AmpMedia products are available for the detection and quantification of various microorganisms. All AmpMedia products are available ready to use in liquid form. AmpMedia are supplemented with different indicator systems. Selection of the appropriate indicator system is driven by the specific application. As the LabImager TR is capable of the detection of any colour change, alongside with ph- and Redox indicators, the whole currently and future available chromogenic indicator system can be used. Fluorogenic substrates can also be used when the uv-imager UV-detection system will be used for detection ...
System contamination is a significant issue for labs analyzing gamma-hydroxybutyrate (GHB) as typical methods include derivatization and liquid injection. Here, an acid conversion solvent extraction method is evaluated for compatibility with both headspace and liquid injection techniques. This extraction method can improve lab efficiency and reduce contamination by eliminating the use of derivatization reagents.
ATCC® Transfection reagents may be used for the transfer of nucleic acids for a variety of applications, including protein expression and the overexpression of mutant genes. Our transfection reagents are cationic lipid-based; due to their positive charge, these transfection reagents interact with the negatively charged backbone of nucleic acids and cell membranes. This effect, coupled with the hydrophobic nature of the associated lipids, allows the cationic lipid-DNA complex to be transported into eukaryotic cells. ATCC offers:. ...
Annexin V-Biotin Apoptosis Reagent (ab14165). Quick and reliable detection of phosphatidylserine exposure by flow cytometry or microscopy.
The inositol portion was synthesised using the key TA step which had an superb yield of 74% on using (only) 1 mol% catalyst loading, giving the desired diastereomer exclusively. This step has been improved upon the previously reported result (61% yield at 4 mol% catalyst loading). The attacment of the inositol portion to the B+C part was achieved using standard coupling reagents and on deprotection yielded Hygromycin A in 17 linear steps and 10% overall yield a great improvement over the previous synthesis ...
Proven, cost-efficient LANCE Ultra reagents can be used to quantitate peptide modifications, detecting specific meythylation and acetylation states. No wash, homogenous LANCE Ultra reagents are HTS friendly - design your own epigenetics screening strategy for greatest efficiency.. Epigenetic enzymatic assays are optimized using a biotinylated histone H3-derived peptide as substrate. The modified peptide is captured by the Eu-labeled antibody (Ab) and ULight-Streptavidin (SA) which bring the Eu donor and ULight acceptor dye molecules into close proximity. Upon irradiation at 320 or 340 nm, the energy from the Eu donor is transferred to the ULight acceptor dye which, in turn, generates light at 665 nm. The intensity of the light emission is proportional to the level of biotinylated substrate modification.. ...
Opal Polymer HRP Ms + Rb is a ready-to-use immunohistochemistry detection reagent specifically optimized for use with Opal and TSA® Plus detection reagents for maximum sensitivity, reduced incubation time and low background. This product reacts specifically with primary antibodies raised in mouse and rabbit and is part of a rapid, biotin-free detection protocol.
3-(diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one: a coupling reagent for mediating amide bond formation with little or no racemization; structure in first source
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Apparatus and methods for aspirating and dispensing reagents are provided. Aspirating of reagents is accomplished by a probe, a vial insert and reagent vial according to the present invention wherein a seal is formed between the probe and the vial insert when the probe engages the vial insert. Dispensing of reagents is accomplished by a probe and a probe dispense and wash station according to the present invention wherein a seal is formed between the probe and the vial insert when the probe engages the probe dispense and wash station.
Miyawaki and his team are currently using Scale to study mouse brains and neurons. However, they are not oblivious to the myriad other uses their new reagent has. In fact, they are working on creating similar reagents that are mild enough to use on living tissue. Maybe Ive read too much science fiction, but Im picturing a doctor painting a swab of reagent on a patients chest to look at his heart. Im pretty sure thats not how it would work though, mores the pity. ...
Alkaline Phosphatase Enhancer Reagents datasheet (ab671). Abcam offers quality products including antibodies, assays and other reagents.
One important observation about HCP immunoassays is that they occasionally give dilution-dependent results. Dilution dependence arises because the HCPs in the sample (perhaps one or a few HCPs) do not dilute in parallel with those in the standard (a mixture of 1000s of proteins). Limiting amounts of reagents can come in the form of coat, conjugate antibodies, or even Streptavidin-HRP that are associated with antigen excess and non-linear dilution behavior. It is advised to check all reagents to minimize impacts of reagent limitation sample dilution linearity. From a product purity perspective, however, sample dilution non-linearity is not an assay artifact but rather could be an important indication that a large amount of a particular HCP has co-purified with product. Phospholipase B-like 2 (PLBL2) was found to co-purify with multiple CHO-derived Mab products. It may be that this is a common impurity in Mabs produced across the biotech industry since it was found to have co-purified with ...
This product is composed of the Corona Virus COVID-19 specific dominant epitope antigen, fixed on a nitrocellulose specific membrane, a coloured latex-labelled anti-human IgM antibody release pad and other reagents. The latex immunochromatographic technology was used to detect the Corona ...
Description: Quantitativesandwich ELISA kit for measuring Human Interleukin-34(IL34) in samples from serum, plasma, tissue homogenates, cell culture supernates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits ...
Description: Quantitativesandwich ELISA kit for measuring Mouse Interleukin 17, IL-17 in samples from serum, plasma, tissue homogenates, cell culture supernates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits ...
Recombinant human SDF1 beta protein Full length protein datasheet (ab9800). Abcam offers quality products including antibodies, assays and other reagents.
The Thermo Scientific Pierce c-Myc Tag IP/Co-IP Kit provides the affinity resin and other reagents necessary to easily perform immunoprecipitation (IP) or co-immunoprecipitation (co-IP) experiments using a c-Myc-tagged protein as the bait.The c-Myc peptide (EQKLISEEDL) has become a popular fusion ta
This report contains market size and forecasts of Immunohistochemistry Reagent in global, including the following market information: Global Immunohistochemistry Reagent Market Revenue, 2016-2021, 2022-2027, ($ millions) Global Immunohistochemistry Reagent Market Sales, 2016-2021, 2022-2027, (K Units) Global top five Immunohistochemistry Reagent companies in 2020 (%) The global Immunohistochemistry Reagent market was valued at xx million in […]. ...
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Protein modification reagents such as SATA, HPG, Sulfo-NHS-Acetate, and Trauts Reagent are useful for adding labels to or blocking functional groups on proteins, peptides, and other molecules.
ClearChem Diagnostics offers a complete list of Drugs of Abuse reagents through Thermo Scientific. Drugs of Abuse reagents are performed for addiction treatment, medical determinations, and to provide a quick index of drug-related problem.
Performing CRISPR/Cas9 experiment using RNP? jetCRISPR is an innovative reagent designed to deliver gRNA and Cas9 protein into cells. Request your sample today!