920978-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 920978-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,0,9,7 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 920978-34:
(8*9)+(7*2)+(6*0)+(5*9)+(4*7)+(3*8)+(2*3)+(1*4)=193
193 % 10 = 3
So 920978-34-3 is a valid CAS Registry Number.
920978-34-3Relevant articles and documents
Synthesis of macrocyclic polyethers via Ru complex-catalyzed metathesis cyclization and their use as the ring component of rotaxanes
Umemiya, Takeshi,Takeuchi, Daisuke,Osakada, Kohtaro
, p. 5260 - 5266 (2006)
Ring closing metathesis of the vinyl group-terminated oligoethers catalyzed by RuCl2({double bond, long}CHPh)(PCy3)2 yielded macrocyclic polyethers containing vinylene group. The 1H and 13C NMR spectr