209682-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209682-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,6,8 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 209682-98:
(8*2)+(7*0)+(6*9)+(5*6)+(4*8)+(3*2)+(2*9)+(1*8)=164
164 % 10 = 4
So 209682-98-4 is a valid CAS Registry Number.
209682-98-4Relevant academic research and scientific papers
Synthesis of some pyrimidothienopyrimidine derivatives
Kamal El-Dean, Adel M.
, p. 523 - 533 (2007/10/03)
The pyrimidothienopyrimidines 5 and 6 have been synthesized via the reaction of compounds 4a, b with CS2 and were further transformed to related fused heterocyclic systems.
