128371-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128371-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,7 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128371-17:
(8*1)+(7*2)+(6*8)+(5*3)+(4*7)+(3*1)+(2*1)+(1*7)=125
125 % 10 = 5
So 128371-17-5 is a valid CAS Registry Number.
128371-17-5Relevant articles and documents
A novel one-pot synthesis of substituted pyridazines: A general method of preparation of 3,4,6-tri aryl pyridazines
Nongkhlaw, Rishan Lang,Nongrum, Ridaphun,Myrboh, Bekington
, p. 465 - 472 (2007/10/03)
3,4,6-triaryl pyridazines 4 were conveniently prepared in one step by the condensation of aryl methyl ketones and 1,2-diketones in presence of base, followed by cyclisation with hydrazines.