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207131-41-7

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207131-41-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207131-41-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,1,3 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 207131-41:
(8*2)+(7*0)+(6*7)+(5*1)+(4*3)+(3*1)+(2*4)+(1*1)=87
87 % 10 = 7
So 207131-41-7 is a valid CAS Registry Number.

207131-41-7Relevant articles and documents

A general and diastereoselective synthesis of 1,2-cis-hexofuranosides from 1,2-trans-thiofuranosyl donors

Gelin, Muriel,Ferrieres, Vincent,Plusquellec, Daniel

, p. 1423 - 1431 (2000)

The general formation of 1,2-trans-thioglycofuranosides derived from D- galactose, D-glucose and D-mannose was readily accomplished starting from the corresponding alkyl glycofuranosides via per-O-acetyl-hexofuranoses as key synthons. Glycosidation of ethyl or phenyl perbenzylated 1,2-trans- thiofuranosides afforded disaccharides containing a nonreducing 1,2-cis- hexofuranosyl unit, i.e. α-D-galactosyl, α-D-glucosyl or β-D-mannosyl, with interesting diastereoselectivities. Activation of the thiofuranosyl donors was performed by N-iodosuccinimide and a catalytic amount of tin(II) trifluoromethanesulfonate.

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