131575-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131575-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,7 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131575-43:
(8*1)+(7*3)+(6*1)+(5*5)+(4*7)+(3*5)+(2*4)+(1*3)=114
114 % 10 = 4
So 131575-43-4 is a valid CAS Registry Number.
131575-43-4Relevant articles and documents
A New Approach to Neoflavonoid Synthesis
Donnelly, Dervilla M. X.,Finet, Jean-Pierre,Guiry, Patrick J.,Hutchinson, Rhona M.
, p. 2851 - 2852 (2007/10/02)
Neoflavonoids or 4-arylcoumarins are prepared by arylation of 3-hydroxycoumarins with aryl-lead triacetates followed by palladium-catalysed reduction of the derived 3-trifluoromethylsulphonyloxyarylcoumarins.