309931-49-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309931-49-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,3 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 309931-49:
(8*3)+(7*0)+(6*9)+(5*9)+(4*3)+(3*1)+(2*4)+(1*9)=155
155 % 10 = 5
So 309931-49-5 is a valid CAS Registry Number.
309931-49-5Relevant academic research and scientific papers
New Zirconocene-Coupling Route to Large, Functionalized Macrocycles
Nitschke, Jonathan R.,Zuercher, Stefan,Don Tilley
, p. 10345 - 10345 (2007/10/03)
The development of a new macrocyclization reagent, Rosenthal's Cp2Zr(pyr)(Me3SiC≡CSiMe3), has allowed the preparation of two large, functionalized macrocycles. The diyne 5,5′-bis(4-trimethylsilylphenyl)-2,2′-bipyridine was
