113769-39-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113769-39-4 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 9 respectively.
Calculate Digit Verification of CAS Registry Number 113769-39:
(8*1)+(7*1)+(6*3)+(5*7)+(4*6)+(3*9)+(2*3)+(1*9)=134
134 % 10 = 4
So 113769-39-4 is a valid CAS Registry Number.
113769-39-4Relevant academic research and scientific papers
Synthesis of Substituted Furobenzopyrones
Hishmat, O. H.,Rahman, A. H. Abd El,Diwani, H. I. El,Bakr, Sh. M. Abu
, p. 566 - 568 (2007/10/02)
Friedel-Crafts acylation of 2,3-diphenyl-6-methoxybenzofuran (I) using phenylacetyl chloride in CS2 gives a mixture of 5-phenylacetyl (II) and 5,7-diphenylacetyl (III) derivatives.Acylation in benzene, however, gives only II.Reaction of II and III with et
