917989-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 917989-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,7,9,8 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 917989-40:
(8*9)+(7*1)+(6*7)+(5*9)+(4*8)+(3*9)+(2*4)+(1*0)=233
233 % 10 = 3
So 917989-40-3 is a valid CAS Registry Number.
917989-40-3Relevant articles and documents
An approach to triquinane synthesis using the Pauson-Khand reaction
Krafft, Marie E.,Kyne, Graham M.,Hirosawa, Chitaru,Schmidt, Peter,Abboud, Khalil A.,L'Helias, Nathalie
, p. 11782 - 11792 (2006)
Tricyclic skeletons have been generated from acyclic enyne precursors by using an intramolecular Pauson-Khand reaction in combination with aldol, Michael and alkylation reactions.
