108909-90-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 108909-90-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,9,0 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 108909-90:
(8*1)+(7*0)+(6*8)+(5*9)+(4*0)+(3*9)+(2*9)+(1*0)=146
146 % 10 = 6
So 108909-90-6 is a valid CAS Registry Number.
108909-90-6Relevant articles and documents
1,2-DIMETHYLSPIROHEX-1-ENE BY ADDITION OF CYCLOBUTYLIDENE TO 2-BUTYNE
Brinker, Udo H.,Weber, Juergen
, p. 5371 - 5374 (2007/10/02)
The first addition of a cyclobutylidene (carbenoid) to an alkyne is reported.By C4+C2-coupling the spirohex-1-ene system 8 is constructed.Furthermore, cyclobutylidene adds to methylenecyclopropane, its intramolecular reaction product, to give the novel dispirooctane 11.