156274-31-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156274-31-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,2,7 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156274-31:
(8*1)+(7*5)+(6*6)+(5*2)+(4*7)+(3*4)+(2*3)+(1*1)=136
136 % 10 = 6
So 156274-31-6 is a valid CAS Registry Number.
156274-31-6Relevant articles and documents
Synthesis of thieno[3,2-d]pyrimidine-2,4-diones cyclic and acyclic nucleosides as potential anti HIV agents
Jourdan,Laduree,Robba
, p. 305 - 312 (2007/10/02)
Synthesis of cyclic and acyclic nucleosides was achieved by alkylation of 7-methyl or arylthieno[3,2-d]pyrimidine-2,4-diones following the Vorbruggen and Niedballa's method [1]. After a possible deprotection, potential anti HIV agents were obtained.