77419-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77419-23-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,1 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77419-23:
(7*7)+(6*7)+(5*4)+(4*1)+(3*9)+(2*2)+(1*3)=149
149 % 10 = 9
So 77419-23-9 is a valid CAS Registry Number.
77419-23-9Relevant academic research and scientific papers
Knapp, Spencer,Trope, Adrea F.,Ornaf, Raphael M.
, p. 4301 - 4304 (1980)
Treatment of cyclic ketones with (MeS)3C-Li, then CuClO4.4CH3CN, gives the corresponding ring expanded 1,2-keto-thioketals.