258522-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 258522-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,5,2 and 2 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 258522-19:
(8*2)+(7*5)+(6*8)+(5*5)+(4*2)+(3*2)+(2*1)+(1*9)=149
149 % 10 = 9
So 258522-19-9 is a valid CAS Registry Number.
258522-19-9Relevant academic research and scientific papers
Asymmetric palladium annulation: Formal synthesis of (+)-huperzine A
Chassaing, Christophe,Haudrechy, Arnaud,Langlois, Yves
, p. 8805 - 8809 (2007/10/03)
A new formal stereoselective synthesis of (+)-huperzine A 1 was achieved using as a key step a palladium mediated annulation between 2-methylene-1,3- propanediol diacetate and (1R,2S)-2-phenylcyclohexanol derived β-ketoester 14.
