109153-08-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109153-08-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,1,5 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 109153-08:
(8*1)+(7*0)+(6*9)+(5*1)+(4*5)+(3*3)+(2*0)+(1*8)=104
104 % 10 = 4
So 109153-08-4 is a valid CAS Registry Number.
109153-08-4Relevant articles and documents
2-Alkylidenimidazolidine - Synthesis, Basicity, 1H- and 13C-NMR Spectra
Gruseck, Ursula,Heuschmann, Manfred
, p. 2053 - 2064 (2007/10/02)
4,5-Dihydroimidazolium salts 2, 3, and 4 were synthesized by carefully directed alkylation of 4,5-dihydroimidazoles 7 and 8. 2, 3, and 4 were deprotonated by sodium hydride to yield 2-alkylideneimidazolidines 1. 1H and 13C-NMR spectra allow to assign the
