20995-65-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20995-65-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,9 and 5 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20995-65:
(7*2)+(6*0)+(5*9)+(4*9)+(3*5)+(2*6)+(1*5)=127
127 % 10 = 7
So 20995-65-7 is a valid CAS Registry Number.
20995-65-7Relevant academic research and scientific papers
Cunningham, Ian D.,Woolfall, Marc
, p. 9248 - 9256 (2005)
The pKa values for calixarenes in MeCN have been determined by selective titration with bases using a spectroscopic method. These values are as follows: calix[4]arene pKa(1) = 19.06 ± 0.22, pK a(2) > 33; calix[6]arene pKs
