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503864-14-0

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503864-14-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503864-14-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,8,6 and 4 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 503864-14:
(8*5)+(7*0)+(6*3)+(5*8)+(4*6)+(3*4)+(2*1)+(1*4)=140
140 % 10 = 0
So 503864-14-0 is a valid CAS Registry Number.

503864-14-0Downstream Products

503864-14-0Relevant articles and documents

The synthesis of aromatic diazatricycles from phenylenediamine-bis(methylene Meldrum's acid) derivatives

Graf, Gabriele Ina,Hastreiter, Daniel,Da Silva, Luiz Everson,Rebelo, Ricardo Andrade,Montalban, Antonio Garrido,McKillop, Alexander

, p. 9095 - 9100 (2007/10/03)

The thermocyclisation of phenylenediamine-bis(methylene Meldrum's acid) derivatives has been investigated. Those of o-phenylenediamines give 1,10-phenanthroline derivatives, while those of m- and p-phenylenediamines lead to the preferential formation of angular diazatricycles. Thus, for example, the di-Meldrum's acid derivative of 2,5-dichloro-1,4-phenylenediamine gives, via ipso-substitution, the unexpected angular product 19.

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