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1296665-06-9

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1296665-06-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1296665-06-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,6,6,6 and 5 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1296665-06:
(9*1)+(8*2)+(7*9)+(6*6)+(5*6)+(4*6)+(3*5)+(2*0)+(1*6)=199
199 % 10 = 9
So 1296665-06-9 is a valid CAS Registry Number.

1296665-06-9Relevant articles and documents

A new diversity oriented and metal-free approach to highly functionalized 3H-pyrimidin-4-ones

Riva, Renata,Banfi, Luca,Basso, Andrea,Zito, Paola

, p. 2107 - 2122 (2011/05/08)

A new synthesis of 3H-pyrimidin-4-ones, characterized by four different sets of decorations, is presented. The strategy is based on the synthetic elaboration of readily available α-substituted β-ketoesters that, upon transformation into the corresponding acyl enamines, have been cyclized to give 6H-1,3-oxazin-6-ones. These reactive intermediates have been in turn cleanly converted into highly functionalized pyirimidinones, by treatment with an appropriate primary amine. The whole sequence does not need the use of any metal mediator or catalyst.

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