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141563-16-8

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141563-16-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141563-16-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,5,6 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 141563-16:
(8*1)+(7*4)+(6*1)+(5*5)+(4*6)+(3*3)+(2*1)+(1*6)=108
108 % 10 = 8
So 141563-16-8 is a valid CAS Registry Number.

141563-16-8Downstream Products

141563-16-8Relevant articles and documents

(Z)-N3-(2-Amino-1,2-dicyanovinyl)formamidrazone: a Precursor in the Synthesis of 1,5-Diaminoimidazoles and 6-Carbamoyl-1,2-dihydropurines

Alves, M. Jose,Booth, Brian L.,Freitas, A. Paula,Proenca, M. Fernanda J. R. P.

, p. 913 - 917 (1992)

The reaction of ethyl (Z)-N-(2-amino-1,2-dicyanovinyl)formimidate with hydrazine monohydrate leads to (Z)-N3-(2-amino-1,2-dicyanovinyl)formamidrazone in almost quantitative yield.This compound proved to be an important starting material for the synthesis of the corresponding N1-isopropylidene- and N1-acetyl-formamidrazones.The amidrazones prepared promptly cyclize in the presence of base to give a 1,5-diamino-4-cyanoimidazole or a 1,5-diamino-4-(cyanoformimidoyl)imidazole, depending on the reaction conditions and mainly on the nature of the base used to induce cyclization. 1,5-Diamino-4-(cyanoformimidoyl)imidazole was treated with carbonyl compounds and the 1,2-dihydropurines thus isolated indicated that the amino group in position 5 is more reactive than that in position 1.

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