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1221716-69-3

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1221716-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1221716-69-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,7,1 and 6 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1221716-69:
(9*1)+(8*2)+(7*2)+(6*1)+(5*7)+(4*1)+(3*6)+(2*6)+(1*9)=123
123 % 10 = 3
So 1221716-69-3 is a valid CAS Registry Number.

1221716-69-3Downstream Products

1221716-69-3Relevant articles and documents

Highly enantioselective Michael-cyclization cascade promoted by synergistic asymmetric aminocatalysis and Lewis acid catalysis

Yu, Chenguang,Zhang, Yinan,Zhang, Shilei,He, Jing,Wang, Wei

supporting information; experimental part, p. 1742 - 1744 (2010/05/18)

The novel dual cooperative asymmetric aminocatalysis and Lewis acid catalysis has been successfully developed for promoting cascade Michael-cyclization reaction with high enantio-, regio- and chemo-selectivity. The simple and practical process affords a one-pot approach to synthetically useful cyclopentenes.

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