109865-79-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109865-79-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,6 and 5 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 109865-79:
(8*1)+(7*0)+(6*9)+(5*8)+(4*6)+(3*5)+(2*7)+(1*9)=164
164 % 10 = 4
So 109865-79-4 is a valid CAS Registry Number.
109865-79-4Relevant articles and documents
The Synthesis Of (1,3,4-Oxadiazole-2,5-Diyl) Dibenzoic Acids and Their Thiadiazole Analogues
Javaid, Khalid,Smith, David M.
, p. 985 - 997 (2007/10/02)
The title compounds are best prepared by oxidation of the corresponding 2,5-ditolyl-1,3-4-oxadiazole or -thiadiazole, and are most easily characterised by the 13C n.m.r. spectra of their di-potassium salts.
