831-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 831-20-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,3 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 831-20:
(5*8)+(4*3)+(3*1)+(2*2)+(1*0)=59
59 % 10 = 9
So 831-20-9 is a valid CAS Registry Number.
831-20-9Relevant academic research and scientific papers
Synthesis of novel dipyrido-1,4-thiazines
Morak-Mlodawska, Beata,Pluta, Krystian
, p. 1347 - 1361 (2008/03/13)
An efficient synthesis of novel type of dipyrido-1,4-thiazine (4) was elaborated in the reactions of two pairs of 3,4-disubstituted pyridines in DMF. The reactions proceeded through the S→N type of the Smiles rearrangement of the resulting 4,4′-dipyridiny
