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1262233-42-0

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1262233-42-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262233-42-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,2,2,3 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1262233-42:
(9*1)+(8*2)+(7*6)+(6*2)+(5*2)+(4*3)+(3*3)+(2*4)+(1*2)=120
120 % 10 = 0
So 1262233-42-0 is a valid CAS Registry Number.

1262233-42-0Relevant articles and documents

The Glycosylation Mechanisms of 6,3-Uronic Acid Lactones

Elferink, Hidde,Mensink, Rens A.,Castelijns, Wilke W. A.,Jansen, Oscar,Bruekers, Jeroen P. J.,Martens, Jonathan,Oomens, Jos,Rijs, Anouk M.,Boltje, Thomas J.

, p. 8746 - 8751 (2019)

Uronic acids are important constituents of polysaccharides found on the cell membranes of different organisms. To prepare uronic-acid-containing oligosaccharides, uronic acid 6,3-lactones can be employed as they display a fixed conformation and a unique reactivity and stereoselectivity. Herein, we report a highly β-selective and efficient mannosyl donor based on C-4 acetyl mannuronic acid 6,3-lactone donors. The mechanism of glycosylation is established using a combination of techniques, including infrared ion spectroscopy combined with quantum-chemical calculations and variable-temperature nuclear magnetic resonance (VT NMR) spectroscopy. The role of these intermediates in glycosylation is assayed by varying the activation protocol and acceptor nucleophilicity. The observed trends are analogous to the well-studied 4,6-benzylidene glycosides and may be used to guide the development of next-generation stereoselective glycosyl donors.

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