104995-39-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104995-39-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,9,9 and 5 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 104995-39:
(8*1)+(7*0)+(6*4)+(5*9)+(4*9)+(3*5)+(2*3)+(1*9)=143
143 % 10 = 3
So 104995-39-3 is a valid CAS Registry Number.
104995-39-3Relevant academic research and scientific papers
Stability and Enamine-Imine Tautomerism in 1,2- and 2,5-Dihydropyrimidines
Weis, A. L.,Frolow, F.,Vishkautsan, R.
, p. 4623 - 4626 (2007/10/02)
A series of 1,2- and 2,5-dihydropyrimidines was synthesized by LiAlH4 reduction of the corresponding pyrimidines.It was demonstrated that these compounds undergo imine-enamine tautomerism.The ratio as well as the stability of imine (2,5) or enamine (1,2)
