91971-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91971-62-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,7 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91971-62:
(7*9)+(6*1)+(5*9)+(4*7)+(3*1)+(2*6)+(1*2)=159
159 % 10 = 9
So 91971-62-9 is a valid CAS Registry Number.
91971-62-9Relevant academic research and scientific papers
Synthesis and Reactions of α-Methylene-β-keto Sulfones
Weichert, Andreas,Hoffmann, H. Martin R.
, p. 4098 - 4112 (2007/10/02)
Modified Jones oxidation of 2-(benzenesulfonyl)-2-alken-1-ols and rapid nonnucleophilic workup below 0 deg C yields a variety of α-methylene-β-keto sulfones 4, including crystalline parent 4a and also e-h, which can be stored at -20 deg C without change.I
