Autres

<p>Applications Delorazepam 4-Oxide is an N-oxide of Delorazepam (D230675) and an intermediate in the synthesis of Lorazepam (L469850).<br>References Cepanec, I. et al.: Org. Proc. Res. Dev., 10, 1192 (2006); Guerrato, A. et al.: Boll. Chim. Farm., 126, 170 (1987);<br></p>

<p>Applications The main metabolite of Chlordiazepoxide (C327050).<br>References Barbone, F., et al.: Lancet, 352, 1331 (1998); Miki, A., et al.: J. Anal. Toxicol., 26, 87 (2002);<br></p>

<p>Applications Tetramethylurea is an excellent solvent for organic substances, in particular aromatic compounds.<br>References Lüttringhaus, A., et al.: Angew. Chem. Int. Ed. Engl., 3, 260 (1964)<br></p>

<p>Applications Carfilzomib (2R,4S)-Diol is a derivative of Carflizomib (C183460), a second-generation proteasome inhibitor that is used as a treatment in relapsed and refractory multiple myeloma.<br>References Fostier, K., et al.: Oncotargets. Therap., 5, 237 (2012); Geurink, P.P., et al.: J. Med. Chem., 56, 1262 (2013); McCormack, P.L., et al.: Drugs., 72, 2023 (2012);<br></p>

<p>Applications Palbociclib N-Aldehyde is an intermediate in synthesizing Palbociclib N-β-D-Glucuronide Sodium Salt (P139910), a derivative of Palbociclib (P139900) which is an experimental drug for the treatment of breast cancer being developed by Pfizer. It is a selective inhibitor of the cyclin-dependent kinases CDK4 and CDK6.<br>References Finn, R., et al.: Breast Cancer Res., 11, 5 (2009)<br></p>

<p>Applications Cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II).<br>References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984),<br></p>

<p>Applications A metabolite of Zopiclone (Z700500).<br>References Fernandez, C., et al.: Clin. Pharmacokinet., 29, 431 (1995), Nordgren, H., et al.: Ther. Drug Monit., 24, 410 (2002),<br></p>

<p>Applications An impurity of Nintedanib, which is an antifibrotic drug.<br>References Holdsworth, G.; et al.: Scientific Reports, 7, 1 (2017)<br></p>

<p>Applications Cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II).<br>References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984),<br></p>

<p>Applications Desmethyl 5-Methoxycarbonyl Nintedanib is an impurity of Intedanib (I666650), which is an indolinone derivative potently blocking VEGF-, PDGF-, and FGF-receptor kinases. it is an indolinone as triple angiokinase inhibitors and an antitumor agent.<br>References Sun, L., et al.: J. Med. Chem., 41, 2588 (1998); Xie, H., et al.: J. Med. Chem., 50, 4898 (2007); Hilberg, F., et al.: Cancer Res., 68, 4774 (2008); Roth, G., et al.: J. Med. Chem., 58, 1053 (2015)<br></p>

<p>Chromogenic substrate for β-D-glucosidase. Yields a red precipitate upon cleavage.</p>

<p>Aldol 470 phosphate is a chromogenic substrate for phosphatases yielding a yellow precipitate. Furthermore it shows some fluorescence (excitationat 320 nm to 490 nm). In contrast to classical indoxyl substrates, Aldolsubstrates work not only under aerobic but also under anaerobic conditions.</p>

<p>Chromogenic substrate for cellulases; red color</p>

<p>Aldol® 515 palmitate is a chromogenic substrate that is used in food testing, diagnostics, and other applications. It has a high purity and is conjugated to various ligands for specific applications. Aldol® 515 palmitate is an excellent chemiluminescent substrate for the detection of ATP and other nucleotides. It also has high bioluminescence activity for the detection of adenosine-5'-triphosphate (ATP) or luciferin as well as enzyme substrates to measure β-galactosidase or β-glucuronidase activity.</p>

<p>5-Bromo-4-chloro-1-methyl-3-indolyl-β-D-glucopyranoside is a fluorescent substrate used for the detection of β-glucuronidase. It can be used in several enzyme substrates, such as 5,5'-dithiobis(2-nitrobenzoic acid), 5,5'-dithiobis(3,4,5,-trimethoxybenzoic acid), and 4-(p-[N-(7-(2,7'-dimethyl -2H -chromenyl)-2H -indazolium)]phenylazo)benzoic acid. This product is used for diagnostics and culture media as well as food testing. The product has an extremely high purity and a CAS number.</p>

<p>2-Naphthyl-lpha-D-glucopyranoside is a substrate for α-glucosidase. 2-Naphthol is released upon hydrolyzation. By simultaneous coupling with a suitable staining reagent, such as hexazonium p-rosaniline, the corresponding reddish-brown azo-dye is formed. Naphthols can also be detected by fluorescence analysis.</p>

<p>Chromogenic β-glucosaminidase substrate yielding a yellow solution upon cleavage, used particularly in yeasts and molds.</p>

<p>6-Chloro-3-indolyl phosphate disodium salt is a chromogenic substrate that is used in food testing, diagnostics, and environmental testing. It can be used to detect the presence of the enzyme phosphatase by adding it to a sample containing glucose, which will produce an orange color. The ligand 6-chloro-3-indolyl phosphate disodium salt can also be used as a bioluminescence probe for detecting ATP or ADP using luciferase. This product has high purity and quality, and is available at a competitive price.</p>

<p>4-Nitrophenyl beta-D-xylobioside is a chromogenic substrate for xylanase. Upon hydrolysis, para-nitrophenol is released yielding a yellowish colour. 4-Nitrophenyl beta-D-xylobioside is used in different applications such as the Xylan degradation studies, paper/pulp industry applications</p>

<p>Chromogenic substrate for beta-galactosidase</p>

<p>Chromogenic substrate for beta-glucuronidase</p>

<p>Aldol 495 acetate is a chromogenic substrate that contains the chemical compound Aldol. It is used in food testing, diagnostics, and environmental testing. Aldol 495 acetate can be used as a ligand to detect the presence of enzymes or bacteria in culture media and diagnostics. This product has been shown to have a high purity and quality.</p>

<p>2-O-(4-Nitrophenyl)-a-D-N-glycolylneuraminic acid is commonly used to measure the activity of sialidase enzymes, specifically those that cleave glycoconjugates containing 2-O-(4-nitrophenyl)-alpha-D-N-glycolylneuraminic acid. The resulting product can be detected by measuring the absorbance at a specific wavelength using a spectrophotometer. This substrate offers a high degree of specificity for glycolylneuraminic acid-containing substrates and is useful for both research and diagnostic purposes.</p>

<p>Chromogenic substrate for beta-glucanase</p>

<p>Aldol 470 acetate is a chromogenic substrate for carboxylesterases yielding a yellow precipitate. Furthermore it shows some fluorescence(excitation at 320 nm to 490 nm). In contrast to classical indoxylsubstrates, Aldol substrates work not only under aerobic but also under anaerobic conditions.</p>

<p>Chromogenic substrate for phosphatase</p>

<p>Aldol® 495 beta-D-glucuronic acid is a chromogenic and fluorogenic enzyme substrate used for detection of beta-glucuronidase activity. The living cells of Escherichia coli can be reliably detected in growth media containing Aldol® 495 beta-D-glucuronic acid, as beta-glucuronidase occurs almost exclusively in E. coli. Aldol® 495 beta-D-glucuronic acid can also be in GUS reporter assays. Aldol® 495 beta-D-glucuronic acid can be used in liquid culture and solid media, and is suitable for use under aerobic and anaerobic conditions. Upon exposure to active beta-glucuronidase, Aldol® 495 beta-D-glucuronic acid develops orange colour and green fluorescence.</p>

<p>2-Nitrophenyl b-D-cellobioside heptaacetate is a chromogenic enzyme substrate used to assay for cellobiohydrolase activity. The substrate undergoes enzymatic hydrolysis, releasing 2-nitrophenol which can then be detected via absorbance at 400 nm. This type of substrate is also used for the analysis of cellulose and hemicelluloses in plant materials. The heptaacetate modification enhances solubility, making it ideal for use in organic solvents, and it also protects against unwanted hydrolysis by acid or alkali. The substrate can be used in a variety of applications, including enzyme assay development, screening for inhibitors or activators, and in the study of the mode of action and substrate specificity of cellulase enzymes.</p>

<p>2-(N-Hexadecanoylamino)-4-nitrophenylphosphocholine hydroxide, often abbreviated as HDA-PC, is a chromogenic substrate for acid sphingomyelinase enzyme. HDA-PC is used as a key substrate for measuring the activity of this enzyme, responsible for catalyzing the hydrolysis of sphingomyelin to ceramide. The activity assay for this measuring this enzyme's acitivy is to detect a deficiency (or lack) of the enzyme which is directly related to the Niemann-Pick disease.</p>

<p>Phosphoric acid, mono(4-nitrophenyl) ester is an inhibitor that binds to the human serum albumin (HSA), thereby preventing it from binding to the transcriptional regulatory protein. This leads to a decrease in the activity of this protein and consequently less inhibition of gene expression. The structural analysis of this inhibitor has shown that it forms hydrogen bonding interactions with basic proteins, while its reactivity is mainly dependent on Michaelis–Menten kinetics. The inhibitor also inhibits enzyme activities by binding to their active sites, reducing the enzyme's ability to catalyze reactions.</p>

<p>Chromogenic substrate targeting beta- galactosidase and whose color is dependent on the metal chelating.Alizarin-2-beta-D-galactopyranoside is a chromogenic substrate for enzymes based on alizarin and has been reported for the detection of bacterial beta-galactosidase by researchers at the University of Northumbria and the Freeman Hospital, Newcastle upon Tyne in the UK (James, 2000).</p>

<p>Aldol® 515 acetate is a chromogenic and fluorogenic substrate, used for detection of esterase activity. The colorless product is cleaved by purified esterase, or esterase secreted by microorganisms in liquid or solid media, yielding a red color and red fluorescence signal when Aldol® 355 fluorescence enhancer or a suitable matrix is present. Aldol® 515 acetate can be used under aerobic and anaerobic conditions. Well detectable color/fluorescence of bacterial colonies or liquid cultures is obtained within 16-48 h. In the presence of a purified esterase, color and fluorescence develops within minutes to few hours.</p>

<p>Aldol® 515 L-alanine amide is a chromogenic and fluorogenic enzyme substrate used for detection of L-alanine aminopeptidase activity. The colorless enzyme substrate is cleaved by L-alanine aminopeptidase produced by microorganisms, grown in liquid or solid media yielding red color. In addition, red fluorescence is generated when a fluorescence enhancer or a suitable matrix is present. Aldol® 515 L-alanine amide can be used under aerobic and anaerobic conditions.</p>

<p>2-Nitrophenyl-1-thio-beta-D-galactopyranoside is a nitroaryl compound that can be synthesized from beta-D-galactopyranosides and nitric acid. It has a molecular conformation that is stabilized by hydrogen bonds, which allows it to form supramolecular assemblies with other molecules. The nitro group in this molecule is responsible for the formation of the nitro group in 1,2,4,5,-tetranitrobenzene.</p>