1373521-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1373521-21-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,3,5,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1373521-21:
(9*1)+(8*3)+(7*7)+(6*3)+(5*5)+(4*2)+(3*1)+(2*2)+(1*1)=141
141 % 10 = 1
So 1373521-21-1 is a valid CAS Registry Number.
1373521-21-1Relevant articles and documents
Ugi-smiles coupling of thiouracil derivatives towards 2,4-diamino pyrimidines
Sidhoum, Madjid Ait,Ka?m, Laurent El,Grimaud, Laurence
, p. 632 - 636 (2012/04/11)
Diaminopyrimidines could be synthesized via a multicomponent coupling starting from S-alkyl thiouracil derivatives. The synthetic strategy based upon an Ugi-Smiles coupling, and subsequent oxidation of the adducts affords a versatile platform for the prep
