#C_6H_6# and #C_6H_5CH_3#, benzene and toluene, are industrial solvents.....and are used in various quantities as solvents for paints, lacquers, and thinners.
#"Napthalene"#, #C_10H_8#, is a solid with a distinctive odour, which moth larvae do not like, and thus it sold commercially as #"moth balls"#. And don't knock it. Sooner or later you find that the little blighters have been dining on your favourite suit or dress; and that is when you start deploying chemical weapons of mass destruction in earnest.
#"Anthracene"#, is coal tar.....#C_14H_10# and added to certain soaps, and certain medications.
#"Phenol"#, #C_6H_5OH#, used to be used widely as an antiseptic.
All of these compounds are used as substrates in bullk chemical synthesis.