Li, Qing published the artcileSynthesis and characterization of thieno[3,4-b]pyrazine materials for solution-processible organic red light-emitting diodes, Product Details of C4Br2N2O4S, the publication is Chemistry Letters (2011), 40(4), 417-419, database is CAplus.
Two novel thieno[3,4-b]pyrazine-cored mols., P-DTP and TP-DTP, are synthesized and are characterized by extra large Stokes shifts of over 300 nm. The bulky polyaromatic arms enable these mols. to be solution processible and provide site-isolation on the planar emissive core. They exhibit saturated red electroluminescence in non-oped organic light-emitting diodes fabricated by spin coating.
Chemistry Letters published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Product Details of C4Br2N2O4S.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary