71457-19-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71457-19-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,4,5 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71457-19:
(7*7)+(6*1)+(5*4)+(4*5)+(3*7)+(2*1)+(1*9)=127
127 % 10 = 7
So 71457-19-7 is a valid CAS Registry Number.
71457-19-7Relevant academic research and scientific papers
ONE-POT SYNTHESIS OF CHIRAL PHOSPHONOUS ESTERS, CONVERSION INTO ASYMMETRIC PHOSPHINES
Chodkiewicz, W.
, p. C55 - C56 (2007/10/02)
Bulky phenols react with phosphonous chloroesters of cinchonine, or cinchonidine, to yield, quantitatively, the corresponding phosphonous esters of high diastereomeric purity.The aryloxy group can be specifically replaced by reaction with aromatic Grignar
