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781657-61-2

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781657-61-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 781657-61-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,1,6,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 781657-61:
(8*7)+(7*8)+(6*1)+(5*6)+(4*5)+(3*7)+(2*6)+(1*1)=202
202 % 10 = 2
So 781657-61-2 is a valid CAS Registry Number.

781657-61-2Relevant articles and documents

Synthesis of 2,5-anhydro-(β-D-glucopyranosyluronate)- and (α-L-idopyranosyluronate)-D-mannitol hexa-O-sulfonate hepta sodium salt

Kuszmann, Janos,Medgyes, Gabor,Boros, Sandor

, p. 1569 - 1579 (2007/10/03)

Glycosidation of 2,5-anhydro-1,6-di-O-benzoyl-D-mannitol with methyl(2,3,4-tri-O-acetyl-α-D-glucopyranosyl-1-O-trichloroacetimidate) uronate in the presence of trimethylsilyl triflate afforded the corresponding 3-O-β-glycoside, which after deprotection wa

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