117993-77-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117993-77-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,9 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117993-77:
(8*1)+(7*1)+(6*7)+(5*9)+(4*9)+(3*3)+(2*7)+(1*7)=168
168 % 10 = 8
So 117993-77-8 is a valid CAS Registry Number.
117993-77-8Relevant articles and documents
THE CARBENE COMPLEX ROUTE TO DONOR-ACCEPTOR-SUBSTITUTED CYCLOPROPANES
Wienand, Anette,Reissig, Hans-Ulrich
, p. 2315 - 2318 (1988)
A variety of donor-acceptor-substituted cyclopropanes can be synthesized starting from electron deficient olefins in preparatively usefull yields employing Fischer carbene complexes as donor-carbene source.