81725-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81725-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,2 and 5 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81725-17:
(7*8)+(6*1)+(5*7)+(4*2)+(3*5)+(2*1)+(1*7)=129
129 % 10 = 9
So 81725-17-9 is a valid CAS Registry Number.
81725-17-9Relevant academic research and scientific papers
Directed Ortho Lithiation of Isophthalonitrile. New Methodology for the Synthesis of 1,2,3-Trisubstituted Benzenes
Krizan, Timothy D.,Martin, J. C.
, p. 2681 - 2682 (2007/10/02)
The lithiation of 1,3-dicyanobenzene with lithium diisopropylamide occurs in high yield, regiospecifically at the 2-position, to give aryllithium species stable at temperatures below -90 deg C.
