239-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 239-58-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,3 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 239-58:
(5*2)+(4*3)+(3*9)+(2*5)+(1*8)=67
67 % 10 = 7
So 239-58-7 is a valid CAS Registry Number.
239-58-7Relevant articles and documents
New entry to indazolo[2,3-a]quinazolines by revision of the reported structure of an indolo[1,2-b]indazole derivative
Katayama, Hajime,Kato, Osamu,Kaneko, Kimiyoshi
, p. 1099 - 1101 (1996)
The reported structure of an indolo[1,2-b]indazole derivative is revised to a indazolo[2,3-a]quinazoline derivative based on detailed NMR analyses and chemical transformation.
