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1379519-57-9

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1379519-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1379519-57-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,9,5,1 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1379519-57:
(9*1)+(8*3)+(7*7)+(6*9)+(5*5)+(4*1)+(3*9)+(2*5)+(1*7)=209
209 % 10 = 9
So 1379519-57-9 is a valid CAS Registry Number.

1379519-57-9Downstream Products

1379519-57-9Relevant articles and documents

Improved methods for the stereoselective synthesis of mannoheptosyl donors and their glycosides: Toward the synthesis of the trisaccharide repeating unit of the Campylobacter jejuni RM1221 capsular polysaccharide

Picard, Sébastien,Crich, David

supporting information, p. 5501 - 5510 (2013/07/11)

In view of the importance of 6-deoxymannoheptosides as structural units in the Campylobacter jejuni RM1221 capsular polysaccharide, the development of effective synthetic protocols for 4-O-6-S-α-cyanobenzylidene thio-d-mannoheptapyranoside donors carrying either 3-O-naphthylmethyl or 3-O-acetyl groups is described starting from d-mannose. In particular, tris(phenylthio)methyllithium is found to undergo highly stereoselective addition to a mannose-6-aldehyde in sharp contrast to the vinyl Grignard reagent whose reactions were essentially devoid of selectivity. A brief survey of coupling reactions with the two donors indicted the 3-O-acetyl system to be highly α-selective whereas the 3-O-naphthylmethyl congener was highly β-selective indicating that the presence of the seventh carbon atom in these donors is not detrimental to coupling selectivity in either instance.

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