The title compound, C15H12N4OS, was unexpectedly isolated from the rea
ction of 6-methoxy-1H-benzimidazol-2-ylthio)phenyl]thiourea with dicyc
lohexylcarbodiimide. The compound showed considerable anti-cancer acti
vity in vitro. The benzimidazole and iminobenzothiazoline rings are co
planar via hydrogen bonding between the N atom of the imino group of b
enzothiazole and the H-N bond of benzimidazole. The whole molecule has
a planar structure.