Carbohydrates and glycoconjugates

<p>13C labeled maltose is a useful analytical standard for Carbon NMR spectroscopy</p>

<p>Hyaluronic acid is a polysaccharide containing repeating disaccharide units of β-1,3-N-acetyl glucosamine and β-1, 4-glucuronic acid. A series of unsaturated oligosaccharides (oligouronic acids) are released from hyaluronic acid by the action of hyaluronidase on umbilical cord (Weissman, 1954). This hexasaccharide and other enzymatically produced polymer homologs have been of value in the study of hyaluronic acid metabolism in healthy and diseased tissues (Hascall, 2019).</p>

<p>Maltohexaose is a polysaccharide formed by 6 units of glucose and can be metabolised inside the cell to a substrate-based inhibitor of fucosyltransferases. It can also be converted to GDP-2-deoxy-2-fluoro-L-fucose, a competitive inhibitor of α-1,3-fucosyltransferase. Matohexaose is used as acceptor for measuring the activity of 4-Alpha-Glucanotransferase.</p>

<p>α-1,4-glucododecasaccharide derived from starch by hydrolysis and chromatography</p>

<p>A antigen tetrasaccharide Type I I, possible use in antiviral development</p>

<p>A disaccharide</p>

<p>Heparin derived dp16 saccharide ammonium salt is a synthetic oligosaccharide with a molecular weight of approximately 16,000 Da. The compound is an amine-modified heparin sulfate fragment containing 16 saccharides linked in a linear fashion. It has been used for the click modification of proteins, and as a carbohydrate receptor in glycosylation studies. Heparin derived dp16 saccharide ammonium salt can also be custom synthesized to meet specific needs. Click modification and fluorination are two modifications that have been applied to the compound for various purposes.</p>

<p>A mixture of sodium trigalacturonate &amp; tetragalacturonate (α-1,4 sodium galacturonotriose + α-1,4 sodium galacturonotetraose) is derived from pectin or pectic acid, by enzymatic or partial acid hydrolysis (Combo, 2012). It is used in galacturonic acid metabolism research as a substrate to identify, differentiate, and characterize endo- and exopolygalacturonase(s), and gluconase(s) (Jayani, 2005). The addition of very short fragments of homogalacturonan, tri-galacturonate, and tetra-galacturonate oligosaccharides, restore development in dark-grown, de-etiolated seedling mutants, suggesting that they are unable to generate de-methylesterified pectin fragments. A model of spatiotemporally separated photoreceptive and signal-responsive cell types has been proposed, that contains overlapping subsets of the regulatory network of light-dependent seedling development (Sinclair, 2017).</p>

<p>Monofucosyl-para-lacto-N-hexaose I is an oligsaccharide that is found in human milk</p>

<p>4-Deoxy-D-chitobiose heptaacetate is a synthetic compound that has been modified by the addition of a heptaacetate group. This modification provides an additional site for attachment to other molecules, such as nucleic acids or proteins. The fluorination of this saccharide provides further protection against degradation and increases its stability in aqueous solutions. 4-Deoxy-D-chitobiose heptaacetate is available in high purity and can be custom synthesized to meet your needs.</p>

<p>3'-Sialyl Lewis x-HSA is a custom synthesis of a high purity, complex carbohydrate that has been modified to include fluorination. This product is synthesized from a monosaccharide and an oligosaccharide. It has been shown to have anti-inflammatory properties and is useful in the treatment of type II diabetes.</p>

<p>2-Acetamido-3-O-(2,3,4,6-tetra-O-acetyl-b-D-galactopyranosyl)-4-O-acetyl-6-O-(2,3,4,6-tetra-O-benzoyl-b-D -galactopyranosyl)-2 deoxy a D galactopyranosyl Fmoc threonine tert butyl ester is a custom synthesis with high purity and custom synthesis. This product is recommended for methylation and glycosylation reactions. It is a complex carbohydrate that has been modified by fluorination and saccharide.</p>

<p>Gala1-3(Fuca1-2)Galb1-3GlcNAcb1-3Gal (B antigen pentasaccharide Type I)</p>

<p>Globo-H is a high purity, custom-synthesized hexasaccharide with a spacer arm and biotin at the non-reducing end. Globo-H is synthesized by reacting glycosylation reagents with an oligosaccharide on a solid support. The reaction generates an activated glycosylant, which is then reacted with the spacer arm and biotin to form the desired product. Globo-H has been modified for use in click chemistry reactions.</p>

<p>3'-Sialyllactosyl azide is a complex carbohydrate that is modified with fluorination, saccharide modification, and methylation. 3'-Sialyllactosyl azide is synthesized from a monosaccharide by glycosylation, methylation, click modification, or polysaccharides. The CAS number for this compound is 814-07-1. This product can be custom synthesized to meet the customer's needs.</p>

<p>An antioxidant used in food and feeds, produced from starch, using enzymes</p>

<p>D-Fructose-13C6-1,6-diphosphate sodium salt is a reactive compound used as a model in studies of metabolic disorders. It has been shown to have an inhibitory effect on the enzymes that catalyze the conversion of D-fructose 1,6 diphosphate to D-fructose 6 phosphate in the cytosol. The compound is also useful for determining the binding of calcium ions to proteins and for measuring the activity of carbon source enzymes.</p>

<p>GM1 pentasaccharide, APD-HSA has a core tetrasaccharide structure (Galβ1,3GalNAcβ1,4Galβ1,4Glc) with a single sialic acid residue linked α2,3 to the inner galactose residue. Human serum albumin (HSA) is attached β to position 1 of the reducing glucose moiety via an acetylphenylenediamine (APD) linker (Ledeen, 2009). This type of conjugate has been useful in the study of the role of GM1 ganglioside in the diarrheal response caused by cholera toxin (Cervin, 2018).</p>

<p>Maltotriose hydrate is a synthetic glycosylation product that is synthesized by the fluorination of maltotriose. Maltotriose hydrate is a sugar with a 3-D structure that is similar to maltodextrin, but with one less glucose residue. Maltotriose hydrate can be used in the synthesis of oligosaccharides and polysaccharides and has been shown to have high purity. Maltotriose hydrate can be modified by a variety of reactions, such as methylation, monosaccharide modification, or click chemistry. It has an CAS number and can be custom synthesized for clients' needs.</p>

<p>Methyl 2-acetamido-2-deoxy-6-O-(b-D-galactopyranosyl)-a-D-glucopyranoside is a custom synthesis, modification and fluorination of a monosaccharide. The saccharide is modified with methylation and click modification at the 6th carbon position. This product is designed for use in the synthesis of complex carbohydrates.</p>