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496924-01-7

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496924-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 496924-01-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,6,9,2 and 4 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 496924-01:
(8*4)+(7*9)+(6*6)+(5*9)+(4*2)+(3*4)+(2*0)+(1*1)=197
197 % 10 = 7
So 496924-01-7 is a valid CAS Registry Number.

496924-01-7Relevant articles and documents

Syntheses of N-aryl-protected glucosamines and their stereoselectivity in chemical glycosylations

Otsuka, Yuji,Yamamoto, Toshihiro,Fukase, Koichi

, p. 3019 - 3023 (2017/07/17)

N-Aryl-protecting groups were introduced in glucosamines to achieve β-selective glycosylation. Various N-aryl aminosugars were synthesized via Buchwald–Hartwig reaction. Glycosylation using glycosyl trichloroacetimidates of N-aryl aminosugars smoothly proceeded in the presence of trimethylsilyl trifluoromethanesulfonate. Use of a glycosyl donor comprising an electron-donating 2,4-dimethoxyphenyl (DMP) group led to the glycosylation proceeding with high β selectivity. This stereoselectivity seemed to be derived from the formation of an aziridine intermediate. The DMP-protecting group can be removed immediately by using ammonium hexanitratocerate (IV).

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