159429-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159429-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,4,2 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 159429-49:
(8*1)+(7*5)+(6*9)+(5*4)+(4*2)+(3*9)+(2*4)+(1*9)=169
169 % 10 = 9
So 159429-49-9 is a valid CAS Registry Number.
159429-49-9Relevant 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