209682-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209682-33-7 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, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 209682-33:
(8*2)+(7*0)+(6*9)+(5*6)+(4*8)+(3*2)+(2*3)+(1*3)=147
147 % 10 = 7
So 209682-33-7 is a valid CAS Registry Number.
209682-33-7Relevant academic research and scientific papers
Kamal El-Dean, Adel M.
, p. 523 - 533 (1998)
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.
