113769-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113769-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,7,6 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 113769-34:
(8*1)+(7*1)+(6*3)+(5*7)+(4*6)+(3*9)+(2*3)+(1*4)=129
129 % 10 = 9
So 113769-34-9 is a valid CAS Registry Number.
113769-34-9Relevant articles and documents
SYNTHESIS AND REACTIONS OF BENZOFUROPYRYLIUM SALTS
Dulenko, V. I.,Tolkunov, S. V.
, p. 730 - 733 (1987)
A method has been developed for the synthesis of 3-acetonyl- and 3-phenacylbenzofurans by cyclization of 1-aryloxy-2,4-pentanediones and 1-phenyl-4-aryloxy-1,3-butanediones in polyphosphoric acid.Acylation of 3-acetonyl(phenyl-benzofurans) with alip