118717-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 118717-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,1 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 118717-66:
(8*1)+(7*1)+(6*8)+(5*7)+(4*1)+(3*7)+(2*6)+(1*6)=141
141 % 10 = 1
So 118717-66-1 is a valid CAS Registry Number.
118717-66-1Relevant articles and documents
INTRAMOLECULAR CYCLOADDITIONS OF KETENES AND VINYLKETENES TO OLEFINS -III. THE SYNTHESIS OF ANGULAR ANNULATED TRIQUINANE DERIVATIVES
Veenstra, Siem J.,Mesmaeker, Alain De,Ernst, Beat
, p. 2303 - 2306 (1988)
Intramolecular cycloaddition of vinylketene 2 or ketene 6 to an olefin yielded the angular annulated triquinane precursors 4 or 7.The rate enhancement by DMAP in this process was demonstrated.