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256433-52-0

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256433-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 256433-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,4,3 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 256433-52:
(8*2)+(7*5)+(6*6)+(5*4)+(4*3)+(3*3)+(2*5)+(1*2)=140
140 % 10 = 0
So 256433-52-0 is a valid CAS Registry Number.

256433-52-0Relevant articles and documents

Optically pure 3,6-dioxazocan-2-one derivatives by intramolecular cycloaddition of azidoformates and their opening to substituted α-amino ketones

De Santis, Marco,Fioravanti, Stefania,Pellacani, Lucio,Tardella, Paolo A.

, p. 2709 - 2711 (2007/10/03)

Azidoformates derived from chiral enol ethers, when irradiated, give 3,6-dioxazocan-2-one derivatives 7 by a highly diastereoselective intramolecular cycloaddition. The hydrolysis of 7 gives a single derivative of 2-aminocyclo-hexanone.

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