103909-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103909-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,9,0 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 103909-89:
(8*1)+(7*0)+(6*3)+(5*9)+(4*0)+(3*9)+(2*8)+(1*9)=123
123 % 10 = 3
So 103909-89-3 is a valid CAS Registry Number.
103909-89-3Relevant academic research and scientific papers
Synthesis of Triazolopyrimidine Derivatives
Miyamoto, Yoshiko
, p. 2678 - 2687 (2007/10/02)
Condensation of diaminomethylenehydrazones with ethoxymethylenemalonitrile (2) gave 2,3-dihydrotriazolopyrimidines in moderate to high yields.Of the variously substituted diaminomethylenehydrazones, amino(monosubstituted amino)methylene ones
