89143-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89143-41-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89143-41:
(7*8)+(6*9)+(5*1)+(4*4)+(3*3)+(2*4)+(1*1)=149
149 % 10 = 9
So 89143-41-9 is a valid CAS Registry Number.
89143-41-9Relevant academic research and scientific papers
A NOVEL RING TRANSFORMATION: 1,2,4-OXADIAZOLES FROM PYRIMIDINE-N-OXIDES
Korbonits, Dezsoe,Simon, Kalman,Kolonits, Pal
, p. 5763 - 5766 (2007/10/02)
Tetrahydropyrimidine-N-oxides (9) rearranged on heating to the azolines 8.In contrary to the azoles 1 and 3, the corresponding azolines (6 and 8) failed to transform to 3-aminopyrazoles and pyrazolines, respectively.
