Abstract: Provided are new compounds that can have the property of being specifically taken up into cancer cells. In the present invention, novel 4-borono-phenylalanine derivatives, borono-phenylalanine derivatives having a heterocyclic skeleton, borono-phenylalanine derivatives having a fused ring structure, or pharmaceutically acceptable salts thereof are prepared. These compounds have the property of being taken up specifically by LAT1 and thus easily taken up specifically by cancer cells in the evaluation of LAT1 and LAT2 selective uptake, and can be conveniently used for neutron capture therapy and the like. A typical example is a compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof.

Abstract: A polyester resin comprising units of a dicarboxylic acid component composed mainly of an aromatic dicarboxylic acid or its ester forming derivative and a diol component composed mainly of ethylene glycol and an ethylene oxide adduct of a bisphenol compound or its derivative.The resin may advantageously be used as a molding material for various moldings such as extrusion molding, blow molding, vacuum molding and injection molding.