4,4''-Bis(2-ethylhexyl)-3',4',5',6'-tetrakis[4-(2-ethylhexyl)phenyl]-1,1':2',1''-terphenyl is an intermediate in the synthesis of Hexa-(2-ethylhexyl)-hexa-peri-hexabenzocoronene (H293890), a compound used to form a single-walled carbon nanotube network in sensor array for analyzing lung cancer markers in breath samples.