A compound that thickens and/or gelatinizes a fluid organic substance to a desired viscosity, or uniformly stabilizes a composition containing the fluid organic substance. Also, a thickening/stabilizing agent including the compound, a thickened/stabilized composition including the thickening/stabilizing agent and a fluid organic substance, and a method for producing the composition. The compound according to the present invention is represented by Formula (1):(R2—HNOC)4-n—R1—(CONH—R3)n (1)where R1 is a group resulting from removing four hydrogen atoms from the structural formula of an aromatic hydrocarbon or cyclohexane, R2 is, independently in each occurrence, an aliphatic hydrocarbon group containing 1 to 4 carbon atoms, R3 is, independently in each occurrence, an aliphatic hydrocarbon group containing 6 or more carbon atoms, and n is an integer of 1 to 3.
