Oligosaccharides

<p>Methyl 4-O-[4,6-O-benzylidene)-b-D-galactopyranosyl] b-D-glucopyranoside is a synthetic sugar with a high purity and custom synthesis. It has been modified by fluorination, methylation, glycosylation, and click modification. This product can be used as a pharmaceutical ingredient for the treatment of tuberculosis.</p>

<p>Neocarratetraose-41-O-sulfate sodium salt is a high purity, synthetic oligosaccharide with a CAS number of 108321-78-4. It is an oligosaccharide that has been modified with methylation, saccharide, and Click modification. Neocarratetraose-41-O-sulfate sodium salt is used in the synthesis of complex carbohydrates and glycosylations. <br>Neocarratetraose-41-O-sulfate sodium salt is synthesized by reacting the sugar neocarratetraose with sulfuryl chloride to form the corresponding sulfonic acid chloride. The resulting compound is then treated with sodium hydroxide to produce its sodium salt form.</p>

Decyl 4-O-b-D-lactopyranosyl-b-D-lactopyranoside is a high purity, custom synthesis, glycosylated oligosaccharide. It has been modified with Click chemistry to incorporate a fluorine atom on the sugar ring. This complex carbohydrate has a CAS No. of 1858224-00-6 and is synthesized by methylation and fluorination reactions. Decyl 4-O-b-D-lactopyranosyl-b-D-lactopyranoside can be used in biomedical research as a model for glycans and glycolipids, as well as in industrial applications such as food production.

<p>Heparin disaccharide I-S, tetrasodium salt is a sodium salt of heparin that has been modified to contain two sulfate groups. The chemical modification of heparin disaccharide I-S, tetrasodium salt alters the molecule's charge and surface properties. This modification increases the molecule's ability to bind with cell surface markers and inhibits the activity of proteases. Heparin disaccharide I-S, tetrasodium salt is able to inhibit leukaemia proliferation in thp-1 cells by binding with cytoskeletal proteins such as vimentin and actin. This chemical also prevents PMA induced morphological changes in thp-1 cells. Heparin disaccharide I-S, tetrasodium salt is used as an anticoagulant in therapeutic settings. It is used to prevent blood clotting by inhibiting the activation of factors Xa and IIa. Heparin disaccharide</p>

<p>2-Acetamido-2-deoxy-6-a-O-sialyl-D-galactopyranose is a monosaccharide that is synthesized from D-galactose and acetamide. It has a molecular weight of 388.13 and an empirical formula of C8H14N2O4. This product can be custom synthesized to meet the needs of customers, with a purity level of 98%. 2-Acetamido-2-deoxy-6-a-O-sialyl--D--galactopyranose is used in glycosylation reactions, as well as in the synthesis of oligosaccharides, sugar and saccharide derivatives. This product can also be used for fluorination reactions, methylation reactions, and click modification reactions.</p>

Allyl β-D-lactose is a disaccharide with an aliphatic alkene functional handle.  This can be used as a functionalised monomer in the synthesis of glycopolymers.

Globotriose conjugated to human serum albumin (HSA)

<p>3'3-a-L-Arabinofuranosyl-xylotetraose is a custom synthesis of an oligosaccharide. It is a polysaccharide that is modified by methylation, glycosylation and carbamoylation. This carbohydrate has been fluorinated at the 3'3 position. The monosaccharide composition of this molecule is erythrose, arabinose and xylose.</p>

<p>1,3:1,4-B-glucotetraose (A) is a high purity and custom synthesis of Oligosaccharide. It is an oligosaccharide sugar derived from glucose. The chemical structure contains an alpha-(1,4)-linked 1,4-alpha-D-glucopyranosyl residue with a glycosylation at the 3 position. 1,3:1,4-B-glucotetraose (A) is synthesized by methylation of 1,3:1,4-B-glucotetraose (B), followed by fluorination and then click modification. This compound has CAS No. 58484-04-1 and can be used in applications such as Fluorination or Click Modification.</p>

Xylosyl-cellobiose is a monosaccharide that was synthesized and modified by methylation, click modification, and fluorination. The compound has been shown to be complex carbohydrate and an oligosaccharide with a polysaccharide. It is a high-purity substance that can be used for the synthesis of saccharides, carbohydrates, or sugars. CAS No. 129865-02-7

The 6-deoxy-6-fluorocyclomaltoheptaose is a low molecular weight compound that has been found to have anti-amylase activity. This substance is characterized by its chromatographic techniques, which can be used to identify the chemical structure of the molecule. The 6-deoxy-6-fluorocyclomaltoheptaose has been found to consist of an amylase inhibitor and an enzyme substrate. It exhibits specificity for the catalytic site of amylase, which is located in subsite 1, and it attacks this substrate at the 6-position of glucose. This substance is not as potent as other amylase inhibitors such as d-glucose, but it does show greater specificity for amylase than other substances with similar structures.

4-O-Acetyl-3,6-di-O-(2,3,4,6-tetra-O-acetyl-a-D-mannopyranosyl)-D-mannopyranose is a synthetic nonreducing sugar that has been modified with an acetate group at C4 and acetyl groups at C3 and C6. This compound is a white to off white crystalline solid. It is soluble in methanol and formamide. The chemical formula of the compound is CHO.

Methyl 2-acetamido-2-deoxy-3-O-(b-D-galactopyranosyl)-b-D-glucopyranoside is a modification of the carbohydrate, which is a complex carbohydrate. It has been synthesized using Custom synthesis and Oligosaccharide. This product is highly pure, with a purity of 99%. Methyl 2-acetamido-2-deoxy-3-O-(b-D-galactopyranosyl)-b-Dpglucopyranoside is used in the synthesis of Monosaccharide and Methylation. It can also be used in Glycosylation and Polysaccharide as well as for sugar or Fluorination.

<p>Sambubiose is a flavonol glycoside that is found in the lacrimal gland of rabbits. It has been used as a dietary supplement and is said to be synthesized by hydrolysis of the starch-bound glucose disaccharides, maltose and maltotriose. Sambubiose is not readily absorbed by the gastrointestinal tract, which may be due to its low solubility in water and acidic pH. It is also poorly absorbed because it contains a glycosidic bond and a non-reducing terminal sugar group. Sambubiose can be detected by nuclear magnetic resonance spectroscopy at 1.5 ppm for the methylene protons from the OH group of the glycosidic bond. The chemical shift at 2.7 ppm corresponds to the methylene protons from the hydroxyl group on malonic acid (a component of sambubiose).</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>

N,N'-Diacetylchitobiosyl allosamizoline is an analog of the insect-inhibiting allosamidin. It has been shown to have inhibitory activity against chitinases and it is a stereoselective inhibitor of chitin synthase. N,N'-Diacetylchitobiosyl allosamizoline is used as a substrate in coupling reactions to produce disaccharides that contain the chitobiose unit. This type of enzyme inhibition may be useful in combating insects that feed on plants or other organisms with exoskeletons made up of chitin.

<p>k-carrageenan derived heptasaccharide tetrasulfate+(3-6 anhydrogalactose)</p>

Rhodionin is a natural product that has been shown to be effective as a food preservative. It is produced through the extraction of usnic acid from Rhodiola rosea and has been used in the study of amyloid protein. Rhodionin is an extractant that has been shown to be able to control analysis of sodium citrate in food composition. The use of rhodionin for this purpose was found to be practical and effective, with no significant changes in the quality or quantity of citric acid. This extractant also shows promise as an analytical method for the detection of ganoderma lucidum, human liver cancer cells, and flavonol glycosides.

<p>The major gel forming component in agar, agarose, consists of a linear chain of sequences of 1,3 linked β-D-galactopyranosyl units and 1,4 linkages to 3,6-anhydro-α-L-galactopyranosyl units. Gelation is done via the formation of double helices (Arnott, 1974). Agar's properties are similar to gelatin as it is primarily used as a plating gel for microbial cultures (Lahaye, 1991). However, agar is a good substitute for animal-based gelatin in vegetarian foods and is easy to use in food gels in a similar way to the carrageenans. Common food applications of agar include: puddings, custards, and soft candies. Agar improves the texture of processed cheese and frozen desserts, and is also added to baked goods to inhibit staling. A creative food application uses agar-based gel cubes that are infused with fruit extract or wine to make a vegetable-based aspic (Armisén, 2009).<br>Agar contains two polysaccharides Agarobiose and Agaropectin. Both Gelidium latifolium and Gelidium amansii are sources of both Agar and Agarose. The images were kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.<br>Agaropectin<br>Agaropectin is a sulphated non-gelling galactan comprising about 30% of Agar. Half ester sulphate is present in varying amounts plus D-glucuronic acid and small amounts of pyruvic acid. As with Agarose the main chain has alternating residues of D-galactose and L-galactose heavily modified with acidic side-groups which are usually sulfate, glucuronate, and pyruvate. Pyruvic acid is possibly attached in an acetal form to the D-galactose residues of the agarobiose skeleton. No formal structure of Agaropectin appears to have been published.<br>Agarose<br>Agarose is a linear gelling polysaccharide of (1-3) linked β-D-galactopyranose residues linked to 3,6-anhydro-α-L-galactopyranose via 1-4 bonds. Agar contains about 60% Agarose.</p>

<p>Glycyl-lacto-N-neotetraose is a complex carbohydrate that is custom synthesized and has high purity. It is an Oligosaccharide, Carbohydrate, and Polysaccharide that can be modified with methylation and glycosylation. This product can be used in the synthesis of other monosaccharides or saccharides to form complex carbohydrates. Glycyl-lacto-N-neotetraose is also fluorinated on one of its hydroxyl groups to produce an active water soluble compound for use in research.</p>