731859-50-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 731859-50-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,3,1,8,5 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 731859-50:
(8*7)+(7*3)+(6*1)+(5*8)+(4*5)+(3*9)+(2*5)+(1*0)=180
180 % 10 = 0
So 731859-50-0 is a valid CAS Registry Number.
731859-50-0Relevant articles and documents
Synthesis of fused heteroarylprolines and pyrrolopyrroles
Jeannotte, Guillaume,Lubell, William D.
, p. 4656 - 4662 (2007/10/03)
Fused heteroarylprolines were prepared starting from 4-oxo-N-(PhF)proline benzyl ester (6, PhF = 9-(9-phenylfluorenyl) following two approaches. First, allylation of oxoproline 6 followed by Wacker oxidation gave 1,4-dione 8 that was selectively converted