An organic semiconductor material comprising a compound having a substructure represented by Formula (10): ##STR00001## wherein B represents a unit having a thiazole ring, A.sup.1 and A.sup.2 each independently represent a unit having an alkyl group as a substituent, A.sup.3 represents a divalent linking group, n.sup.b represents an integer 1-20, n.sup.1 and n.sup.2 each independently represent an integer of 0-20, respectively, and n.sup.3 represents an integer of 0-10.