21905-82-8 Usage
Synthesis Reference(s)
Journal of the American Chemical Society, 80, p. 1977, 1958 DOI: 10.1021/ja01541a049
Check Digit Verification of cas no
The CAS Registry Mumber 21905-82-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,0 and 5 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21905-82:
(7*2)+(6*1)+(5*9)+(4*0)+(3*5)+(2*8)+(1*2)=98
98 % 10 = 8
So 21905-82-8 is a valid CAS Registry Number.
InChI:InChI=1/C8H5N3O2/c12-11(13)8-5-6-3-1-2-4-7(6)9-10-8/h1-5H
21905-82-8Relevant academic research and scientific papers
BIPHENYLENES AND HETEROCYCLIC ANALOGUES OF BIPHENYLENE. PART III. PREPARATION OF PYRAZINE AND QUINOXALINE ANALOGUES OF BIPHENYLENE BY NITROGEN EXTRUSION.
Kanoktanaporn, Santhi,MacBride, J. A. Hugh
, p. 2941 - 2949 (2007/10/02)
Flash vacuum pyrolysis of pyrazinocinnolines (8), obtained by condensing 3,4-diaminocinnoline with α-dicarbonyl compounds, gives 1,4-diazabiphenylenes.Condensation of 3,4-dibromocinnoline with o-phenylenediamine, and oxidation of the isolable dihydrointer
