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40061-46-9

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40061-46-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40061-46-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,0,6 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 40061-46:
(7*4)+(6*0)+(5*0)+(4*6)+(3*1)+(2*4)+(1*6)=69
69 % 10 = 9
So 40061-46-9 is a valid CAS Registry Number.

40061-46-9Relevant articles and documents

TAUTOMERISM OF DERIVATIVES OF AZINES. 16. TAUTOMERISM OF ACYLMETHYLPYRAZINES AND -QUINOXALINES

Mainagashev, I. Ya.,Lapachev, V. V.,Fedotov, M. A.,Mamaev, V. P.

, p. 1339 - 1342 (2007/10/02)

The tautomeric equilibria of acylmethylpyrazines and -quinoxalines in chloroform were studied by 1H, 14N, and 17O NMR spectroscopy.It was shown that keto-enol tautomerism is realized in the acylmethylpyrazine series.Annelation leads to the development of an ylidene tautomer in the acylmethylquinoxaline series.A marked dependence of the position of the intrachelate equilibrium on the character of the solvent was observed.

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