198219-24-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198219-24-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,2,1 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 198219-24:
(8*1)+(7*9)+(6*8)+(5*2)+(4*1)+(3*9)+(2*2)+(1*4)=168
168 % 10 = 8
So 198219-24-8 is a valid CAS Registry Number.
198219-24-8Relevant articles and documents
Regioselective synthesis of 6H-pyrano[3,2-e]pyrimidine-2,4-dione
Majumdar,Das
, p. 4013 - 4019 (1997)
7-Aryloxymethyl-1,3-dimethyl-6H-pyrano[3,2-e]pyrimidine-2,4-diones (4a- f) were synthesized in 88-92% yields (isolated) by the regioselectively thermal [3s, 3s] sigmatropic rearrangement of 1,3-dimethyl-5-(1-aryloxybut- 2-ynyloxy)pyrimidine-2,4-diones, (3