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1320337-31-2

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1320337-31-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1320337-31-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,0,3,3 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1320337-31:
(9*1)+(8*3)+(7*2)+(6*0)+(5*3)+(4*3)+(3*7)+(2*3)+(1*1)=102
102 % 10 = 2
So 1320337-31-2 is a valid CAS Registry Number.

1320337-31-2Relevant articles and documents

Reactivity switching and selective activation of C-1 or C-3 in 2,3-unsaturated thioglycosides

Mukherjee, Arunima,Jayaraman, Narayanaswamy

, p. 1569 - 1575 (2011/09/12)

Reactivity switching and selective activation of C-1 or C-3 in 2,3-unsaturated thioglycosides, namely, 2,3-dideoxy-1-thio-d-hex-2- enopyranosides are reported. The reactivity switching allowed activation of either C-1 or C-3, with the use of either N-iodosuccinimide (NIS)/triflic acid (TfOH) or TfOH alone. C-1 glycosylation with alcohol acceptors occurred in the presence of NIS/TfOH, without the acceptors reacting at C-3. On the other hand, reaction of 2,3-unsaturated thioglycosides with alcohols mediated by triflic acid led to transposition of C-1 ethylthio-moiety to C-3 intramolecularly, to form 3-ethylthio-glycals. Resulting glycals underwent glycosylation with alcohols to afford 3-ethylthio-2-deoxy glycosides. However, when thiol was used as an acceptor, only a stereoselective addition at C-3 resulted, so as to form C-1, C-3 dithio-substituted 2-deoxypyranosides.

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