20873-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20873-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,7 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20873-20:
(7*2)+(6*0)+(5*8)+(4*7)+(3*3)+(2*2)+(1*0)=95
95 % 10 = 5
So 20873-20-5 is a valid CAS Registry Number.
20873-20-5Relevant academic research and scientific papers
A facile synthesis of C2N3-disubstituted-4- quinazolone
Xue, Song,McKenna, Joseph,Shieh, Wen-Chung,Repic, Oljan
, p. 6474 - 6477 (2007/10/03)
A simple and efficient methodology for the synthesis of C 2,N3-disubstituted-4 quinazolones from anilines and N-acylanthranilic acids was developed. The new cyclization conditions are much milder than any other reported protocols and
