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1262446-27-4

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1262446-27-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262446-27-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,2,4,4 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1262446-27:
(9*1)+(8*2)+(7*6)+(6*2)+(5*4)+(4*4)+(3*6)+(2*2)+(1*7)=144
144 % 10 = 4
So 1262446-27-4 is a valid CAS Registry Number.

1262446-27-4Relevant articles and documents

Synthesis of nitrogen bicyclic scaffolds: Pyrimido[1,2-a]pyrimidine-2,6- diones

Grosjean, Sylvain,Triki, Smail,Meslin, Jean-Claude,Julienne, Karine,Deniaud, David

experimental part, p. 9912 - 9924 (2011/02/22)

The multi-step synthesis of 1,3,7-trisubstituted pyrimido[1,2-a] pyrimidinediones starting from isothiocyanates is described. These nitrogen bicycles were prepared by an iterative sequence of functionalization/ cyclocondensation reactions. [4+2] Cycloaddition reactions took place between diazadienic chains and various acyl chlorides providing sophisticated heterobicycles.

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