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572920-57-1

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572920-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 572920-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,7,2,9,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 572920-57:
(8*5)+(7*7)+(6*2)+(5*9)+(4*2)+(3*0)+(2*5)+(1*7)=171
171 % 10 = 1
So 572920-57-1 is a valid CAS Registry Number.

572920-57-1Downstream Products

572920-57-1Relevant articles and documents

Novel 6-azapteridines from bifunctional 1,2,4-triazines

Wamhoff, Heinrich,Tzanova, Milena

, p. 965 - 974 (2007/10/03)

The convergent synthesis of ethyl 5-chloro- and 5-amino-3-aryl-1,2,4-triazinecarboxylates 9a-9d and 10a-10d as well as of 5-amino-3-aryl-1,2,4-triazine-6-carboxamides 11a-11d is described. Compounds 9, 10 and 11 are powerful key compounds for cyclization reactions to the novel pyrimido[4,5-e][1,2,4]triazines 13d, 14c, 14d, 15c and 17a, 17d.

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