117583-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117583-44-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,5,8 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117583-44:
(8*1)+(7*1)+(6*7)+(5*5)+(4*8)+(3*3)+(2*4)+(1*4)=135
135 % 10 = 5
So 117583-44-5 is a valid CAS Registry Number.
117583-44-5Relevant academic research and scientific papers
Synthesis of Bis(propynoyloxy) Aromatics
Wehler, Jon R.,Feld, William A.
, p. 142 - 143 (2007/10/02)
Ten bis(propynoyloxy) aromatics were prepared, in yields ranging from 28percent to 68percent, from propynoyl chloride and the disodium salt of the corresponding dihydroxy aromatic.The structures of these ethynyl compounds were confirmed by IR, (1)H NMR, and DSC.
