51821-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51821-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,8,2 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 51821-09:
(7*5)+(6*1)+(5*8)+(4*2)+(3*1)+(2*0)+(1*9)=101
101 % 10 = 1
So 51821-09-1 is a valid CAS Registry Number.
51821-09-1Relevant articles and documents
Direct addition of fluorine to arylacetylenes
Gatenyo, Julia,Rozen, Shlomo
experimental part, p. 332 - 335 (2009/12/03)
Under suitable conditions elemental fluorine can be added across the carbon-carbon triple bond of arylacetylenes forming tetrafluoroethane derivatives - ArCF2CF2R - in good yields.
