130721-15-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 130721-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,7,2 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 130721-15:
(8*1)+(7*3)+(6*0)+(5*7)+(4*2)+(3*1)+(2*1)+(1*5)=82
82 % 10 = 2
So 130721-15-2 is a valid CAS Registry Number.
130721-15-2Relevant articles and documents
Intramolecular Michael Addition of Chiral Imines to Enoates: a New Asymmetric Carbocyclization Reaction
Dumas, Francoise,d'Angelo, Jean
, p. 167 - 170 (2007/10/02)
Imines 6-8 have been cyclized into ketones 9-11 by using three methods of activation: heating, high pressure and Lewis acid (MgBr2).Low to excellent stereoselectivities were observed.