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80763-71-9

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80763-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80763-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,7,6 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 80763-71:
(7*8)+(6*0)+(5*7)+(4*6)+(3*3)+(2*7)+(1*1)=139
139 % 10 = 9
So 80763-71-9 is a valid CAS Registry Number.

80763-71-9Downstream Products

80763-71-9Relevant articles and documents

Synthesis of D-fructofuranosides using thioglycosides as glycosyl donors

Krog-Jensen, Christian,Oscarson, Stefan

, p. 1234 - 1238 (2007/10/03)

Benzylated and benzoylated ethyl thioglycosides of D-fructofuranose have been synthesized and tested as glycosyl donors in couplings to various primary and secondary carbohydrate acceptors. Treatment of 2-O-acetyl-1,3,4,6-tetra-O-benzoyl-D-fructofuranose with ethyl mercaptan in a BF3·-etherate-promoted reaction gave the benzoylated ethyl 2-thio-α,β-D-fructofuranosides, which after deacylation and benzylation afforded the benzylated derivatives. These thiofructofuranosides, using dimethyl(methylthio)sulfonium triflate (DMTST) or N-iodosuccinimide as promoter, were found to be excellent donors, which gave disaccharide coupling products in quantitative or almost quantitative yields with all tested acceptors, yields rarely found in oligosaccharide synthesis. The benzoylated donors gave only α-linked fructofuranosides, due to participation of the 3-O-benzoyl group, whereas the benzylated donors gave α/β-mixtures.

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