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151449-93-3

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151449-93-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 151449-93-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,4,4 and 9 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 151449-93:
(8*1)+(7*5)+(6*1)+(5*4)+(4*4)+(3*9)+(2*9)+(1*3)=133
133 % 10 = 3
So 151449-93-3 is a valid CAS Registry Number.

151449-93-3Relevant articles and documents

SYNTHESIS AND OXIDATION OF AROMATIC SUBSTITUTED 6,7-DIHYDROPYRAZOLOPYRIMIDINES

Desenko, S.M.,Orlov, V.D.,Lipson, V.V.,Shishkin, O.V.,Potekhin, K.A.,Struchkov, Yu.T

, p. 95 - 99 (1993)

Condensation of 5-amino-3-methylpyrazole with chalcone or dypnone gives aromatic substituted 6,7-dihydropyrazolopyrimidines which undrgo air oxidation.An x-ray structure for 2-methyl-6-hydroxy-5,7-diphenyl-6,7-dihydropyrazolopyrimidine is reported.

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