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124040-50-2

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124040-50-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124040-50-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,0,4 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 124040-50:
(8*1)+(7*2)+(6*4)+(5*0)+(4*4)+(3*0)+(2*5)+(1*0)=72
72 % 10 = 2
So 124040-50-2 is a valid CAS Registry Number.

124040-50-2Relevant articles and documents

NEUE SYNTHESE UND KRISTALLSTRUKTUR DER LEUCROSE

Thiem, Joachim,Kleeberg, Matthias,Klaska, Karl-Heinz

, p. 65 - 78 (2007/10/02)

Boron trifluoride-catalyzed condensation of 2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl fluoride (2) with 3,4-di-O-benzoyl-1,2-O-isopropylidene-β-D-fructopyranose (1) gave preferentially the α-D-(1->5)-linked disaccharide 8.Similarly, glycosylation of benzyl 1,3,4-tri-O-benzoyl-β-D-fructopyranoside (4) with 2 gave preponderantly a disaccharide derivative that, after cleavage of benzoyl as well as benzyl groups, afforded leucrose (5-O-α-D-glucopyranosyl-β-D-fructopyranose; 13).This crystallized in the orthorhombic space group P212121 containing four sugar and four water molecules in the unit cell in two positions in the ratio of 4:1.As expected, both the fructopyranose and the glucopyranose rings adopted the 2C5(D) or 4C1(D) chair conformations, respectively.

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