617673-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 617673-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,1,7,6,7 and 3 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 617673-47:
(8*6)+(7*1)+(6*7)+(5*6)+(4*7)+(3*3)+(2*4)+(1*7)=179
179 % 10 = 9
So 617673-47-9 is a valid CAS Registry Number.
617673-47-9Relevant articles and documents
Synthesis of JKLM ring fragment of ciguatoxin via acetylene-cobalt strategy
Baba, Takayuki,Isobe, Minoru
, p. 547 - 551 (2007/10/03)
A stereoselective synthesis of the JKLM ring fragment has been achieved through a coupling between two segments via heteroconjugate addition, seven-membered ether ring formation mediated by an acetylene cobalt complex and spiroketalization reaction.