It is an object of the present invention to provide a monomer which can provide a cured product having both high toughness and rigidity. The present invention is a (meth)acrylate (D) which is a reaction product of a thiol compound (A) having two or more mercapto groups； an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups； and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.
