577973-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 577973-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,7,7,9,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 577973-21:
(8*5)+(7*7)+(6*7)+(5*9)+(4*7)+(3*3)+(2*2)+(1*1)=218
218 % 10 = 8
So 577973-21-8 is a valid CAS Registry Number.
577973-21-8Relevant articles and documents
A One-pot Synthesis of (E)-5-Bromo-2-pentenoate Esters
Bunce, Richard A.,Irwin, Derek A.
, p. 2979 - 2982 (2007/10/02)
Addition of hydrogen bromide gas to acrolein followed by reaction with a stabilized triphenylphosphoranylidene ylide in benzene solvent affords (E)-5-bromo-2-pentenoate esters in 60-80percent yield with greater than 90percent selectivity for the E double bond isomer.
