57866-90-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57866-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,6 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57866-90:
(7*5)+(6*7)+(5*8)+(4*6)+(3*6)+(2*9)+(1*0)=177
177 % 10 = 7
So 57866-90-7 is a valid CAS Registry Number.
57866-90-7Relevant articles and documents
Bis(pentaluorophenyl) sulfite - A new reagent for the synthesis of activated pentafluorophenyl esters of N-protected amino acids
Il'ina,Davidovich,Rogozhin
, p. 2539 - 2541 (2007/10/02)
A method was proposed for the preparation of bis(perfluorophenyl) sulfite, an effective new reagent for the synthesis of pentafluorophenyl esters of N-protected amino acids without racemization.