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77977-09-4

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77977-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77977-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,7 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77977-09:
(7*7)+(6*7)+(5*9)+(4*7)+(3*7)+(2*0)+(1*9)=194
194 % 10 = 4
So 77977-09-4 is a valid CAS Registry Number.

77977-09-4Relevant articles and documents

Branched-chain Sugars. XXII. Synthesis of Benzyl 2,3-Di-O-benzyl- and 2,3-O-Methylene-β-L-threo-pentopyranosid-4-uloses, and the Corresponding 6-Deoxy-α-D-xylo-hexopyranosid-4-uloses

Matsuzawa, Masafumi,Kubo, Kazusuke,Kodama, Hisashi

, p. 2169 - 2173 (2007/10/02)

The title compounds were synthesized from L-arabinose and D-glucose as intermediates to a few naturally occurring branched-chain sugars.Oxidation conditions of precursors to the corresponding 4-uloses were examined.

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