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556814-88-1

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556814-88-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 556814-88-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,6,8,1 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 556814-88:
(8*5)+(7*5)+(6*6)+(5*8)+(4*1)+(3*4)+(2*8)+(1*8)=191
191 % 10 = 1
So 556814-88-1 is a valid CAS Registry Number.

556814-88-1Relevant articles and documents

Ferric chloride: A mild and versatile reagent for the formation of 1,6-anhydro glucopyranoses

Miranda, Pedro O.,Brouard, Ignacio,Padrón, Juan I.,Bermejo, Jaime

, p. 3931 - 3934 (2003)

A novel method for the preparation of 1,6-anhydro glucopyranoses (mono- and disaccharides) utilizing anhydrous FeCl3 as Lewis acid is described. Treatment of methyl 6-O-benzyl and 6-O-p-methoxybenzyl-α/β D-glucopyranosides derivatives with FeCl3 in CH2Cl2 at room temperature and 40°C afforded 1,6-anhydro glucopyranosides in moderate to good yields, through a debenzylation and intramolecular glycosidation in one step. A plausible reaction pathway is proposed.

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