676541-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 676541-52-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,5,4 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 676541-52:
(8*6)+(7*7)+(6*6)+(5*5)+(4*4)+(3*1)+(2*5)+(1*2)=189
189 % 10 = 9
So 676541-52-9 is a valid CAS Registry Number.
676541-52-9Relevant articles and documents
Synthesis of Porritoxin
Cornella, Ivan,Kelly, T. Ross
, p. 2191 - 2193 (2007/10/03)
A total synthesis following the sequence in Scheme 1 confirms that porritoxin possesses revised structure 3, not the originally assigned 1. A key reaction was the use of iron pentacarbonyl to formylate an aryllithium when DMF and methyl formate proved ins
