256342-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256342-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,3,4 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 256342-50:
(8*2)+(7*5)+(6*6)+(5*3)+(4*4)+(3*2)+(2*5)+(1*0)=134
134 % 10 = 4
So 256342-50-4 is a valid CAS Registry Number.
256342-50-4Relevant academic research and scientific papers
Synthesis of polyfluorinated aromatic polyesters
Zhang, Li,Huang, Wei-Yuan
, p. 55 - 59 (2007/10/03)
Perfluoroalkylation of phenolic compounds by RFI/Na2S2O4 reagent system was used to synthesize fluorinated monomers useful in polycondensation reactions. A series of fluorinated aromatic polyesters was prepared
