Oligosaccharides

2-AB labelled A1F Glycan is a complex carbohydrate. It is custom synthesized and high purity. The CAS number for this compound is 12863-00-8.

3'-Sulfated Lewis X sodium salt is a synthetic carbohydrate with a sulfate group on the 3' position of the sugar. It is a selective blocker of E-selectin, a type of selectin that plays an important role in inflammation and tissue injury. The binding site for 3'-sulfated Lewis X sodium salt is the cavity at the end of the selectin molecule, which has a hydrophobic region. This cavity can be blocked by hydrophobic moieties such as sulfates, fatty acids, or steroids. 3'-Sulfated Lewis X sodium salt has been shown to be effective in treating inflammatory conditions such as asthma and arthritis.

SSEA-4 hexaose is a virulence factor that belongs to the lectin family. It has been shown to be activated by binding to lectins, which are proteins that bind carbohydrates. SSEA-4 hexaose has also been shown to have cytotoxic effects on cells and induce apoptosis in some cancer cell lines. This glycan is expressed in many tissues, including brain, heart, liver, kidney, erythrocytes, lymphocytes and monocytes. In addition, it binds specifically to clostridium perfringens and mycobacterium tuberculosis with high affinity.

Applications 2-O-(α-D-Glucopyranosyl)-D-galactose (cas# 7368-73-2) is a compound useful in organic synthesis. References Gent, P.A., et al.: J. Chem. Soc., 1, 1446 (1974)

Applications N-Desmethyl-6-O-methylerythromycin (9E)-Oxime is a derivative of Clarithromycin (C559750); a semi-synthetic macrolide antibiotic and derivative of Erythromycin (E650000). References Benson, C., et al.: Eur. J. Clin. Microbiol., 6, 173 (1987); Boyanova, L., et al.: J. Med. Microb., 61, 85 (2012); Lin, Z., et al.: Toxicol. Sci., 126, 114 (2012)

Applications Cetirizine Lactose Ester is a lactose adduct of Cetirizine (C281100).

Sialyl Lewis X (SLeX) is a carbohydrate antigen, related to cell adhesion and it has been shown that inhibition of SLeX synthesis leads to decreased adhesion of trophoblast cells to endometrial epithelial cells (Collins, 2006). Sialyl Lewis X is displayed on the terminus of glycolipids that are present on the surface of white blood cells and it has been shown that SLeX has an important role in inflamation processes. The inital adhesion of white blood cells to a site of injury is mediated by E-selectins which are specific for SLeX. Cell-cell recognition between leukocytes and endothelial cells in blood is believed to occur in part through interactions between lectins and oligosaccharide ligands. SLeX is frequently expressed in human cancer cells and primary tumors. It has been demonstrated that SLeX was involved in the adhesion of tumor cells to vascular endothelium. The potential role of SLeX in the tumor metastatic process has been supported by several clinical studies (Liang, 2016).

The methylation of a glycosylation is an organic chemistry technique that can be used to modify the chemical structure of a carbohydrate. A glycosylation is the reaction between an alcohol and a sugar, which produces a glycoside. The addition of methyl groups at specific positions on the sugar molecule can lead to improved properties such as increased stability, increased solubility, or increased uptake by cells. This process has been shown to produce compounds with more desirable pharmacological properties than their parent compounds. Click chemistry is a versatile and powerful method for modifying carbohydrates. It involves the use of copper-catalyzed azide-alkyne cycloaddition reactions to form carbon-nitrogen bonds in place of conventional amide linkages in peptides and proteins. Carbohydrates are modified using this method by attaching small molecules such as fluorine atoms onto one or more carbons in the carbohydrate structure. This process can be used to create novel sugars with improved properties including high purity, high stability

2-O-(2-Acetamido-2-deoxy-b-D-glucopyranosyl)-D-mannopyranose is a disaccharide that contains two acetamides. It has a glycosidic bond and is classified as a glycoside. This compound has the same sequence of residues as D-mannose, but one less carbon atom. The acetamides form an ester linkage to the 2’ and 3’ hydroxyl groups on the sugar moiety.

a-Heptasaccharide is a complex carbohydrate that is synthesized from glycerol and seven monosaccharides. It is used in the synthesis of other carbohydrates and as a fluorination reagent.

Benzyl 2-acetamido-4-O-(2,3,4,6-tetra-O-acetyl-b-D-galactopyranosyl)-2-deoxy-b-D-galactopyranoside is a synthetic glycoside that has been modified with fluorination. It is an oligosaccharide sugar that has been synthesized from the monosaccharide galactose and the disaccharide maltose. The chemical formula for this compound is C14H22FNO6. This product can be used in custom synthesis or as a research reagent.

Stability Hygroscopic Applications A constituent of certain mucopolysaccharides. References Hoffman, P., et al.: Science, 124, 1252 (1956), Meyer, K: Biochim et Biophys. Acta, 21, 506 (1956), Cifonelli, J.A., et al.: Federation Proc., 16, 165 (1957), Cifonelli, J.A., et al.: J. Biol. Chem., 233, 541 (1958)

Applications Cytidine-5,6-d2 (CAS# 40632-25-5) is a useful isotopically labeled research compound.

Heparin-derived dp10 saccharide ammonium salt is a glycosylation product of heparin. This compound is synthesized by the treatment of heparin with a fluorinating agent, such as N-fluoro-N'-(2-chloroethyl)peroxycarbonyl chloride or N-fluoro-N'-(2-bromoethyl)peroxycarbonyl chloride, followed by reaction with an amine. The compound can be modified for specific applications through the use of click chemistry, which allows for the selective modification of either the sugar or side chain of the molecule. This product has been characterized and shown to have high purity and a CAS number.

Applications Labelled analogue of Tildipirosin, a novel 16-membered-ring macrolide used in veterinary medicine. Tildipirosin treat bacterial pathogens including Mannheimia haemolytica and Pasteurella multocida that cause respiratory tract infections in cattle and swine. References Rose, M. et al.: J. Vet. Pharmacol. Ther., (2012); Anderson, N.M. et al.: Antimicrob. Agents. Chemother., (2012);