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21736-57-2

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21736-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21736-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,3 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21736-57:
(7*2)+(6*1)+(5*7)+(4*3)+(3*6)+(2*5)+(1*7)=102
102 % 10 = 2
So 21736-57-2 is a valid CAS Registry Number.

21736-57-2Relevant articles and documents

A regioselective approach to 5-substituted-3-amino-1,2,4-triazines

Limanto, John,Desmond, Richard A.,Gauthier Jr., Donald R.,Devine, Paul N.,Reamer, Robert A.,Volante

, p. 2271 - 2274 (2003)

(Matrix presented) Nucleophilic displacement of readily available α,α-dibromoketones with excess morpholine gave the corresponding ketoaminals, which upon condensation with aminoguanidine in MeOH in the presence of AcOH afforded 5-substituted-3-amino-1,2,

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