A compound which thickens or gels a flowable organic substance to a desired viscosity or uniformly stabilizes a composition containing a flowable organic substance, a thickening stabilizer containing the above compound, a thickening stabilizer and a fluidity A thickening stabilizing composition containing an organic substance, and a process for producing the same. The compound of the present invention is represented by the following formula (1). (R2-HNOC)4-n-R1-(CONH-R3)N (1)(Wherein R1Is a group obtained by removing four hydrogen atoms from the structural formula of aromatic hydrocarbon or cyclohexane, and R2Is an aliphatic hydrocarbon group having 1 to 4 carbon atoms, R3Is an aliphatic hydrocarbon group having 6 or more carbon atoms. N is an integer of 1 to 3)