On January 31, 1981, Poradowska, Henryka; Kaniewska, Alicja published an article.Formula: C8H5ClN2 The title of the article was The mass spectra of halo derivatives of quinoxaline. And the article contained the following:
The mass spectra of 17 haloquinoxalines I (R-R3 = H, Br, Cl, Me) were recorded. All I gave mol.-ion peaks with typical isotopic ratios. The fragmentation path depended on the position of the halo atom: pyrazine-bound halo derivatives fragmented primarily via elimination of a halogen radical with insignificant cyanogen halide elimination, whereas benzene-bound halo derivatives fragmented via successive elimination of 2 RCN mols. (R = H, Me). The experimental process involved the reaction of 5-Chloroquinoxaline(cas: 62163-09-1).Formula: C8H5ClN2
The Article related to haloquinoxaline mass spectra, quinoxaline halo mass spectra, methylquinoxaline halo mass spectra, Physical Organic Chemistry: Spectral and Related Studies and other aspects.Formula: C8H5ClN2
Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider