109909-05-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109909-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,0 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109909-05:
(8*1)+(7*0)+(6*9)+(5*9)+(4*0)+(3*9)+(2*0)+(1*5)=139
139 % 10 = 9
So 109909-05-9 is a valid CAS Registry Number.
109909-05-9Relevant academic research and scientific papers
Sulfuration of the Norbornene Double Bond
Bartlett, Paul D.,Ghosh, Tirthankar
, p. 4937 - 4943 (2007/10/02)
Norbornene react with elemental sulfur to give the trithiolane 1 and the pentathiepane 2 in an equilibrium ratio of 3.5:1, thereaction being favored by polar solvents such as dimethylformamide or dimethyl sulfoxide at temperatures as low as 25 deg C.Simil
