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152770-45-1

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152770-45-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 152770-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,7,7 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 152770-45:
(8*1)+(7*5)+(6*2)+(5*7)+(4*7)+(3*0)+(2*4)+(1*5)=131
131 % 10 = 1
So 152770-45-1 is a valid CAS Registry Number.

152770-45-1Downstream Products

152770-45-1Relevant articles and documents

SIGMA-COMPLEXES IN THE PYRIMIDINE SERIES. 11. 5-ARYLAZO-5-NITRO-2,5- AND -4,5-DIHYDROPYRIMIDINES FROM ANIONIC SIGMA COMPLEXES OF 5-NITROPYRIMIDINE

Remennikiv, G. Ya.,Vishnevskii, S. G.,Pirozhenko. V. V.,Vdovenko, S. I.,Cherkasov, V. M.,et al.

, p. 186 - 193 (2007/10/02)

We have studied the reaction of acetonyl anionic sigma complexes of 5-nitropyrimidines with aryldiazonium salts. We have established that, independently of the position of the geminal unit in the sigma complex, electrophilic attack by the diazonium ion occurs at the C(5) atom with formation of 5-arylazo-5-nitro-2,5- and -4,5-dihydropyrimidines. The latter are unstable and upon isolation are converted to N-methoxycarbonyl-N'-(1-acetonyl-2-nitro-2-arylhydrazono)ethyl-O-methylisourea. The structure of one of these compounds has been proven by x-ray diffraction. Under alkaline conditions, aromatization of 2,5-dihydropyrimidines to 5-arylazo-2-acetonylpyrimidines occurs.

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