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80817-68-1

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80817-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80817-68-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,8,1 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 80817-68:
(7*8)+(6*0)+(5*8)+(4*1)+(3*7)+(2*6)+(1*8)=141
141 % 10 = 1
So 80817-68-1 is a valid CAS Registry Number.

80817-68-1Relevant articles and documents

An efficient synthesis of methyl 1,3-O-isopropylidene-α-D- fructofuranoside and 2,3:5,6-di-O-isopropylidene-D-glucose dimethyl acetal derivatives from sucrose

Hanaya, Tadashi,Sato, Nobuaki,Yamamoto, Hiroshi

, p. 2494 - 2501 (2007/10/03)

Acetalation of sucrose with 2,2-dimethoxypropane in 1,4-dioxane in the presence of p-toluenesulfonic acid, followed by acetylation, afforded methyl 4,6-di-O-acetyl-1,3-O-isopropylidene-α-d-fructofuranoside and 4-O-acetyl-2,3:5,6-di-O-isopropylidene-d-gluc

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