HETERO TYPE MONODISPERSED POLYETHYLENE GLYCOL, INTERMEDIATE FOR PRODUCTION OF HETERO TYPE MONODISPERSED POLYETHYLENE GLYCOL, METHODS FOR PRODUCING SAME, AND HETERO TYPE MONODISPERSED POLYETHYLENE GLYCOL CONJUGATE

摘要

A hetero type monodispersed polyethylene glycol containing a compound represented by the following formula (1):; NH₂—(CH₂CH₂O)_a—CH₂CH₂COOH  (1)(in the formula (1), a represents an integer from 6 to 40);wherein any of (A) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using reverse phase chromatography, (B) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using cation exchange chromatography, and (C) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol containing a compound represented by the formula (1) shown above is derivatized and separated using anion exchange chromatography satisfy specific relational expressions, respectively.