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139684-64-3

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139684-64-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139684-64-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,8 and 4 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139684-64:
(8*1)+(7*3)+(6*9)+(5*6)+(4*8)+(3*4)+(2*6)+(1*4)=173
173 % 10 = 3
So 139684-64-3 is a valid CAS Registry Number.

139684-64-3Relevant articles and documents

The allyl group for protection in carbohydrate chemistry. XXXI conversion of allyl 2,6-di-o-benzyl-α-d-galactopyranoside into allyl 2,6-di-o-benzyl-α-d-glucopyranoside and 2,6-di-o-benzyl-d-glucopyranose

Desai, Trupti,Gigg, Jill,Gigg, Roy

, p. 305 - 309 (2007/10/03)

Allyl 2,6-di-O-benzyl-α-D-galactopyranoside was converted by tin-mediated alkylation into the 3-O-p-methoxybenzyl ether which gave the 4-0-mesyl derivative. Sodium benzoate in refluxing N,N-dimethylformamide converted the last compound into allyl 4-O-benz

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