220983-95-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220983-95-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,9,8 and 3 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220983-95:
(8*2)+(7*2)+(6*0)+(5*9)+(4*8)+(3*3)+(2*9)+(1*5)=139
139 % 10 = 9
So 220983-95-9 is a valid CAS Registry Number.
220983-95-9Relevant academic research and scientific papers
Synthesis and Reactions of 3-Arylsulfonylamido-N-arylsulfonyl-1,4-benzoquinonimines
Avdeenko
, p. 515 - 524 (2007/10/03)
3-Arylsulfonylamido-N-arylsulfonyl-1,4-benzoquinonimines are produced by oxidation of 1,2-diarylsulfonylbenzenes with phenyliodosodiacetate in the presence of boron(III) fluoride etherate. Addition of hydrogen chloride and oxidation with lead tetraacetate
