PROBLEM TO BE SOLVED: To provide a fluorescent brightener having excellent compatibility with thermoplastic resins, a new compound having a stilbene skeleton and useful as a component of a fluorescent brightener and a resin composition containing the fluorescent brightener in a state to suppress the re-aggregation tendency of the brightener. SOLUTION: The new 4,4'-di(benzoxazol-2-yl)stilbene derivative is expressed by general formula (1) ((n) is 0, 1 or 2; and R1 and R2 are each independently a 1-9C straight-chain or branched alkyl), the fluorescent brightener easily soluble in a resin contains the derivative and the resin composition contains the fluorescent brightener and a thermoplastic resin and suppresses the re-aggregation of the brightener. A laminate material is produced by using the resin composition.
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