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297132-68-4

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297132-68-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 297132-68-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,1,3 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 297132-68:
(8*2)+(7*9)+(6*7)+(5*1)+(4*3)+(3*2)+(2*6)+(1*8)=164
164 % 10 = 4
So 297132-68-4 is a valid CAS Registry Number.

297132-68-4Relevant articles and documents

New α-selective thermal glycosylation of acetyl-protected 2-acetamido-2-deoxy-β-D-glucopyranosyl diphenylphosphinate

Kadokawa, Jun-ichi,Nagaoka, Takeshi,Ebana, Jun,Tagaya, Hideyuki,Chiba, Koji

, p. 341 - 344 (2000)

This paper describes new α-selective thermal glycosylation using acetyl-protected 2-acetamido-2-deoxy-β-D-glucopyranosyl diphenylphosphinate (4) as a glycosyl donor. When the glycosylation of 4 with 1-hexanol was carried out under various conditions, the conditions using trimethylsilyl trifluoromethanesulfonate as a promoter in nitromethane at reflux temperature were most suitable for the formation of the α anomer. The glycosylation of 4 with the other common alcohols gave corresponding α-glycosides in relatively high yields under the conditions. When cholesterol, a very steric hindered alcohol, was used as a glycosyl acceptor, α-glycoside was also produced predominantly. Copyright (C) 2000 Elsevier Science Ltd.

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