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87243-54-7

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87243-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87243-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,4 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87243-54:
(7*8)+(6*7)+(5*2)+(4*4)+(3*3)+(2*5)+(1*4)=147
147 % 10 = 7
So 87243-54-7 is a valid CAS Registry Number.

87243-54-7Relevant articles and documents

ACETALS OF LACTAMS AND AMIDES. 42. REACTIONS OF ENAMINO AMIDES AND ENAMINO ESTERS WITH SOME FORMYLATING AGENTS. SYNTHESIS OF DERIVATIVES OF 2-PYRIDONE AND OF PYRIMIDIN-4- AND -6-ONES

Granik, V. G.,Ershov, L. V.,Grizik, S. I.,Chistyakov, V. V.

, p. 1026 - 1031 (2007/10/02)

The reactions of enamino esters and enamino amides with the diethyl acetal of dimethylformamide and with orthoformic ester have been investigated and it has been shown that the process takes place in two directions - with the formation of pyrimidone or 2-

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