1228-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1228-43-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,2 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1228-43:
(6*1)+(5*2)+(4*2)+(3*8)+(2*4)+(1*3)=59
59 % 10 = 9
So 1228-43-9 is a valid CAS Registry Number.
1228-43-9Relevant academic research and scientific papers
Branching Strategy in Organic Synthesis. 2. Reversal of Olefin Polarization with Concomitant Carbon-Carbon Bond Formation
Taber, Douglass F.,Saleh, Samir A.
, p. 4817 - 4819 (2007/10/02)
Vinyl sulfones are smoothly converted to α,β-unsaturated nitriles on exposure to KCN/dicyclohexyl-18-crown-6 in refluxing tert-butyl alcohol.
