1-Methylindan is a component of fuels that is synthesized from 1-indanone (I499900). 1-Indanone is an oxidation product of Indan, a component of fuels, solvents, and varnishes. 1-Indanone is also a metabolite of Thalidomide that has been shown to inhibit the attachment of tumor cells to concanavalin A coated plastic surfaces.