Carbohydrates and glycoconjugates

<p>3-O-(2,3,4,6-Tetra-O-benzyl-a-D-glucopyranosyl)-1,2,4,6-tetra-O-acetyl-b-D-glucopyranose is an oligosaccharide that has been modified with a click modification. This compound is a complex carbohydrate and it is synthesized from a monosaccharide. 3-O-(2,3,4,6-Tetra-O-benzyl-a-D--glucopyranosyl)-1,2,4,6-- tetra--O--acetyl--b--D--glucopyranose is used in methylation reactions.</p>

<p>The 6-O-[2-acetamido-2-deoxy-4-O-(b-D-galactopyranosyl)-b-D-glucopyranosyl]-D-galactopyranose is a disaccharide carbohydrate that can be found in the blood group H. This particular carbohydrate is an example of a sialic acid, which plays an important role in the immune system and other biological processes. Lectins are proteins that bind to carbohydrates and are often used as probes to study glycan structures. Lectin binding assays have been used to characterize this molecule as well as oligosaccharides, glycans, and biohazards.</p>

<p>ABO trisaccharide immobilised on Fractogel with glycosylamine formation</p>

<p>Methyl 2-O-allyl-3-O-(2,3,4,6-tetra-O-acetyl-a-D-mannopyranosyl)-a-D-mannopyranoside is a modification of the carbohydrate that is synthesized by an acetylation of the mannose residue. It has been synthesized as a potential therapeutic agent for cancer treatment. Methyl 2-O-allyl 3,4,6 tetra O acetyl a D mannoside (MAA) is an oligosaccharide which consists of three monosaccharides: mannose (1), allose (2) and glucose (3). The modification of MAA involves the addition of methyl groups to the allyl group on position 1. This modification can be done through fluorination or methylation. Methylated derivatives have shown anti tumor activity in vivo and in vitro studies. The complex carbohydrate has high purity and</p>

<p>Lactosyl-b-1,1'-N-octanoyl-L-threo-sphingosine is a glycosylation agent that is used in the synthesis of complex carbohydrates. This compound has been shown to be stable in aqueous solutions and can be used for the modification of saccharides, oligosaccharides, and polysaccharides. Lactosyl-b-1,1'-N-octanoyl-L-threo-sphingosine is also useful for the fluorination of sugars. The CAS number for this compound is 939036-94-9.</p>

<p>2,3,6,2',3',4',6'-Hepta-O-acetyl-b-D-cellobiosyl azide is a sugar that belongs to the group of carbohydrates. It is modified with fluorination and glycosylation. The CAS number for this compound is 33012-50-9. 2,3,6,2',3',4',6'-Hepta-O-acetyl-b-D-cellobiosyl azide has been synthesized and its chemical modification has been studied. This compound has an average degree of polymerization (DP) of 10. The molecular weight of 2,3,6,2',3',4',6'-Hepta-O-acetyl-b -D -cellobiosyl azide is 569.27 g/mol.</p>

<p>GQ1b ganglioside (ammonium salt) has a core tetrasaccharide structure (Galβ1,3GalNAcβ1,4Galβ1,4Glc) with two sialic acids (NeuAc) linked α2,3/α2,8 to the inner galactose residue, two sialic acids (NeuAc) linked α2,3/α2,8 to the terminal galactose residue, and ceramide linked β to position 1 on the reducing terminal glucose residue (Ledeen, 2009). Anti-GQ1b ganglioside antibody is associated with Miller Fisher syndrome and is also found in patients with related conditions that may share the same pathogenic mechanism, such as, Bickerstaff brainstem encephalitis. Thus, the measurement of anti-GQ1b antibody in suspected cases of Miller Fisher syndrome is a useful diagnostic marker (Paparounas, 2004). It has been found that GQ1b ganglioside contributes to synaptic transmissions and synapse formation. Low concentrations of GQ1b ganglioside, evoked dopamine (DA) release from laboratory tissues (Chen, 2018).</p>

<p>Lacto-N-fucopentaose II-GEL is a complex carbohydrate with a molecular weight of 11,000 Da. This product is not for human use and is intended for research purposes only. It should not be used in food or cosmetics.</p>

<p>Lactulose is a non-absorbable sugar used in the treatment of constipation and hepatic encephalopathy. It is used by mouth for constipation and either by mouth or in the rectum for hepatic encephalopathy. It generally begins working after 8-12 hours, but may take up to 2 days to improve constipation.</p>

<p>Epi-N-Acetyl-lactosamine is a glycosylation agent that is used to modify proteins, carbohydrates, and other biomolecules. It is also used in the synthesis of oligosaccharides and polysaccharides. This product has been custom synthesized to meet your specifications and has been purified to high purity.</p>

<p>2-Acetamido-2-deoxy-4-O-(b-D-galactopyranosyl)-D-mannopyranose is a disaccharide with the chemical formula C8H14N2O6. It has a glycosidic bond between two acetamides and a sequence of three sugars. It is also known as n-acetyl-d-mannosamine, or NAM. 2-Acetamido-2-deoxy-4-O-(b-D-galactopyranosyl)-D-mannopyranose is an important building block in the synthesis of glycoproteins. This molecule's carbohydrate structure confers it with properties that are similar to other monosaccharides.</p>

<p>Difucosyl-para-lacto-N-neohexaose is an extracellular, acidic oligosaccharide with a lactose backbone and two fucoses attached to the 2' position. Difucosyl-para-lacto-N-neohexaose is found in human milk and has been shown to be a potent inhibitor of the lectin anagyroides. Difucosyl-para-lacto-N-neohexaose is composed of tetraoses linked by α(1→4) glycosidic bonds. The linkage between the first two sugars of each tetraose can be either α(1→6) or β(1→3). The linkage between the second two sugars in each tetraose can be either β(1→4) or α(1→6). This linkage pattern restricts the possible structures to six different types,</p>

<p>Lewis X is a glycoprotein found on the surface of red blood cells and is composed of a trisaccharide that is covalently attached to the protein. It is expressed in the cells of all individuals, but at different levels depending on their blood group. Lewis X is an antigen for monoclonal antibody, which recognizes it by binding to its sugar residues. The antibody can be used to detect Lewis X-expressing cells in the blood and for cancer diagnosis. Antibodies against Lewis X can also be used to inhibit tumor growth by enhancing natural killer cell activity and killing tumor cells.</p>

<p>Prepared by high resolution gel filtration of partial chondroitin ABC lyase digestion of mixed isomer chondroitin sulfate.Average MW ~ 992General formula:∆UA – (GalNAc,6S or 4S - GlcA)n - GalNAc,6S or 4Swhere n is number of disaccharide units n = 1 in a tetrasaccharide (dp4) Uronic acid (∆UA) at the non-reducing ends of the oligosaccharides has a C4-C5 double bond as a result of endolytic scission. The main disaccharide repeat in the original chondroitin sulphate is GlcA – GalNAc sulphated at C-6 or C-4 of the GalNAc residue; the CSD disaccharide unit (GlcA,2S – GalNAc,6S) is a minor component comprising approx. 5% of total disaccharides.</p>

<p>The Lewis X trisaccharide 4-methylumbelliferyl glycoside is a high purity, custom synthesis sugar that has been fluorinated and glycosylated. This product is a complex carbohydrate that can be used for various purposes. The CAS number for this product is 359436-57-0.</p>

<p>b-D-Lactosyltrichloroacetimidate heptaacetate is a glycosylation product of the b-D-lactose and trichloroacetic anhydride. This compound is used in the synthesis of oligosaccharides and polysaccharides. It has been shown to be a fluorinated, methylated, or click modified monosaccharide or disaccharide which can be prepared through custom synthesis, or by modification of existing saccharides. This compound has been found to have high purity with a CAS number of 1142022-76-1.</p>

<p>1,2,3,6-Tetra-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-b-D-mannopyranosyl)-D-glucopyranose is a synthetic sugar that has been modified by the methylation of the hydroxyl groups at C1 and C6 with acetaldehyde. This sugar is used in glycosylation reactions to modify proteins and other biomolecules. The product is a white crystalline solid that has a CAS number of 132341-46-9. It can be custom synthesized for research purposes or as a high purity material for commercial use.</p>

<p>Linear B-6 trisaccharide 1-O-n-pentylamine is a glycosylated, fluorinated, saccharide that can be custom synthesized. This compound can be modified with methyl groups, click chemistry, or fluorination. It has a CAS number of 188768-84-0 and is soluble in methanol, ethanol, and water. Linear B-6 trisaccharide 1-O-n-pentylamine is a monosaccharide with a molecular weight of 258.</p>

<p>1,3,6-Tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-b-D-galactopyranosyl)-2-azido-2-deoxy--D--glucopyranose is a modification of a natural sugar. It is an oligosaccharide that is composed of one monosaccharide and two disaccharides. The triacetate group on the first saccharide provides protection against hydrolysis and methylation reactions. This compound has been shown to be synthesized chemically in high purity and with high yield.</p>

<p>b-Lactosyl ureide dihydrate is a white crystalline powder that is soluble in water. It has a molecular weight of 598.7 and was synthesized by the reaction of b-lactosyl chloride with urea. The compound has been used as a fluoro-protecting group for nucleophilic substitution reactions, and glycosylation reactions.</p>