21134-90-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21134-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,3 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21134-90:
(7*2)+(6*1)+(5*1)+(4*3)+(3*4)+(2*9)+(1*0)=67
67 % 10 = 7
So 21134-90-7 is a valid CAS Registry Number.
21134-90-7Relevant articles and documents
Novel one pot synthesis of substituted 1,2,4-triazines
Nongkhlaw, Rishan Lang,Myrboh, Bekington
, p. 67 - 72 (2007/10/03)
Substituted-1,2,4-triazines were conveniently prepared in one pot by the condensation of amides and 1,2-diketones in presence of base, followed by cyclisation with hydrazine hydrate.