128839-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128839-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,3 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128839-71:
(8*1)+(7*2)+(6*8)+(5*8)+(4*3)+(3*9)+(2*7)+(1*1)=164
164 % 10 = 4
So 128839-71-4 is a valid CAS Registry Number.
128839-71-4Relevant articles and documents
A NEW CONDENSED SYSTEM, BENZOTHIENOFURAZANOTHIEPINE TRIOXIDE
Mamaeva, O. O.,Krayushkin, M. M.,Stoyanovich, F. M.
, p. 820 - 823 (2007/10/02)
The dimetallation of phenyl thienyl sulfones was used to obtain derivatives of benzothienofurazanothiepine-1(3),7,7-trioxide, which is a new condensed system.
