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1262446-30-9

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1262446-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262446-30-9 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, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1262446-30:
(9*1)+(8*2)+(7*6)+(6*2)+(5*4)+(4*4)+(3*6)+(2*3)+(1*0)=139
139 % 10 = 9
So 1262446-30-9 is a valid CAS Registry Number.

1262446-30-9Relevant 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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