123217-05-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123217-05-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,2,1 and 7 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 123217-05:
(8*1)+(7*2)+(6*3)+(5*2)+(4*1)+(3*7)+(2*0)+(1*5)=80
80 % 10 = 0
So 123217-05-0 is a valid CAS Registry Number.
123217-05-0Relevant articles and documents
Quinazolones: Part XIII - A New Approach to the Synthesis of Some Oxazolo- & Thiazolo-quinazolones
Sinha, S. K. P.,Kumar, Prashant
, p. 274 - 276 (2007/10/02)
A new unambiguous route for the synthesis of hitherto unknown 3-aryl-oxazoloquinazolin-5-ones (6) and a new one-step route for the preparation of 3-arylthiazoloquinazolin-5-ones (7) involving intramolecular cycloaddition are described.
