A newsterically hindered isoindoline-based 1,3-bis(5'-methyl-4'-phenyl-2'-thiazolylimino)isoindoline (1) was synthesized by fusion method with satisfyingly good yield. The structure of the newly synthesized compound was identified by FT-IR, UV-Vis, ¹H-NMR, 13C-NMR and X-ray analysis.