209806-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209806-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,8,0 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 209806-57:
(8*2)+(7*0)+(6*9)+(5*8)+(4*0)+(3*6)+(2*5)+(1*7)=145
145 % 10 = 5
So 209806-57-5 is a valid CAS Registry Number.
209806-57-5Relevant articles and documents
Sequential epoxide fragmentation/radical cyclizations mediated by samarium(II) iodide
Molander, Gary A.,Del Pozo Losada, Carlos
, p. 5819 - 5832 (2007/10/03)
A sequential reductive coupling process promoted by samarium(II) iodide is described. Cascade epoxide ring opening and two sequential radical cyclizations lead to a variety of bicyclo[m.n.0] systems as mixtures of diastereomers.
