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273749-54-5

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273749-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 273749-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,3,7,4 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 273749-54:
(8*2)+(7*7)+(6*3)+(5*7)+(4*4)+(3*9)+(2*5)+(1*4)=175
175 % 10 = 5
So 273749-54-5 is a valid CAS Registry Number.

273749-54-5Relevant articles and documents

Synthesis of two hyaluronan trisaccharides

Yeung, Bryan K. S.,Hill, Daniel C.,Janicka, Maria,Petillo, Peter A.

, p. 1279 - 1282 (2007/10/03)

(equation presented) The synthesis of two hyaluronan trisaccharides, methyl O-(β-D-glucopyranosyluronic acid)-(1,3)-O(2-acetamido-2-deoxy-β-D-glucopyranosyl)-(1,4)-O-β-D- glucopyranosiduronic acid and methyl O-(2-acetamido-2-deoxy-β-D-glucopyranosyl)-(1,4)-O-β-D- glycopyranosyluronic acid)-(1,3)-O-(2-acetamido-2-deoxy-β-D-glucopyranoside, are described. Construction of the target molecules was achieved though a combination of the phenyl sulfoxide and trichloroacetimidate glycosylation methodologies. This is the first report on the synthesis of the β-methyl derivatives, which represent the smallest fragments that incorporate all the structural features of polymeric hyaluronan.

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